Some sources pertinent to solar house history that are available on the web, ordered roughly by the narrative structure of the book:
*new November 2015
**new October 2015

General Period Sources (pre-1970)
1945 Henry N. Wright and George Nelson book: Tomorrow's House (full text); Chapter 15 is "Solar Heating"
1948 Geoffrey Baker & Bruno Funaro book: Windows in Modern Architecture; section "Solar Heat"
1950 James Marston Fitch paper: "Buildings Designed for Climate Control"
1951 HHFA report: Climate and Architecture: Selected References
1952: "The Possibilities of Solar Energy" from Resources for Freedom  (Paley Commission report)
1953 Palmer Putnam book: Energy in the Future (full text)
1954 UNESCO report: "Report on the Sources and Uses of Energy in Arid Zones" (pdf)
1955 Life article: "Fresh Face to the Sun"
1955 Mechanix Illustrated article: "Hot News about the Sun"
1955 Popular Science article: "New Sun Furnaces May Cool Houses, Too"
1956 University of Kansas bulletin: Natural Light and the Inside-outside Heliodon
1958 Groff Conklin book: The Weather-Conditioned House (full text)
1959 Richard C. Jordan paper: "The Future of Solar Heating"

George Fred Keck and his circle
1933: House of Tomorrow
     Official booklet (pdf)
     Alpha Rho Chi article (pdf; p.4)
     Archival images at Art Institute of Chicago [Link]
     Archival images at Flickr:  [Plan] [Exterior view]
     HABS documents at Library of Congress
     The House of Tomorrow Postcard
1933 Museum of Modern Art press release (pdf)
1940: Sloan House
     Alpha Rho Chi article (pdf; p.2) (from Chicago Tribune)
1944 Patent: Radiant Heating for Buildings
1944: Green's Ready-Made Homes
     Brochure images [cover] [back]
     Popular Mechanics article (1945): "Your Solar Home is all Wrapped Up"
     Central States Research report (1946): The Story of Factory-made Houses (Keck; p. 7 & 12)
     Maison Française images (1947) [Link]
     Burnham Kelly book (1951): The Prefabrication of Houses
1944 Popular Mechanics article: "Solar House Reduces Fuel Bills by One-Third"
1984: Paul Schweikher interview (pdf) by Betty Blum ("A Regale of Tales")
1991: William Keck oral history
1995: Robert Bruce Tague oral history
1998 Chicago Tribune article: "Cold And Dreary Chicago Was An Early Sun City"
2012 Denzer paper: "Prefab + Solar at Midcentury" (pdf)

1944-45 pamphlet: "Solar Houses: An Architectural Lift in Living"
1946 pamphlet: "Thermopane"
1946 patent: "Method and Apparatus for use in Designing Solar Houses"
1951: Sun Angle Calculator 

Your Solar House (1947)
2008 Denzer paper: "The Solar House in 1947" (pdf)
Harwell Hamilton Harris, California house: [1] [2]
Harris Armstrong, Missouri house; 2007 blog by Andrew Raimist: [1] [2]
Stonorov & Kahn, Pennsylvania house: Archival Image Gallery
Article on Ruth Reynolds Freeman’s Vermont house

Henry N. Wright
1945 book Tomorrow's House (full text) by Wright and George Nelson; Chapter 15 is "Solar Heating"
2001 Joanna Kendig thesis: "The Ramirez Solar House: A Case Study of Early Solar Design" (pdf)
2005 Old House Journal article: "Let the Sun Shine"
2008 Tom Solon article: "Rehabilitation of Henry Wright’s Ramirez Solar House"
Ramirez house photo album on Flickr

Arthur T. Brown
Ball-Paylore house archival photos
2010 Denzer paper: "Arthur T. Brown: Pioneer of Passive Solar Architecture" (pdf) 

MIT group
Archival photos from MIT Museum
1940 Popular Science article illustrated with MIT house 1
1949 Popular Science article featuring MIT house 3
1949 The Tech article: "Solar House Occupied" (pdf)
1949 The Tech article: "Tech Family Finds Solar House Life Is Pretty Hot Stuff" (pdf; p.2)
1950 The Tech article: "Symposium Explores Possibilities Of Solar Heating For Houses" (pdf)
1950 The Tech article: "Heating Unit Shows Success" (pdf)
1957 article on MIT house 4: "The House that Stores the Sun"
1958 British Pathé film on MIT house 4
1962 Popular Mechanics article: "Sun Heats Test Home"
1963 Hottel paper: "Collection of Solar Energy"
1976 Dietz & Czapek paper: "M.I.T. Solar House 2"
1978 Popular Science article on MIT Solar Five
1998 Victoria LaGuette MS thesis on Lawrence B. Anderson (pdf)

Maria Telkes
Maria Telkes archival photos: [1]  [2]
Maria Telkes items at MIT Museum
Dover Sun House archival photos: [1]  [2]  [3]  [4]  [5]  [6]
1949 Telkes article: "A Review of Solar House Heating" (pdf)
1949 Popular Science article featuring Dover Sun House
1951 Telkes article: "Future Uses of Solar Energy"
1952 Telkes article: "Warmth for Comfort"
1980 Popular Science article: "Solar salts"
1996 New York Times obituary
2010 MIT Article: "The House of the Day After Tomorrow"
Maria Telkes patents
Radiant Energy Heat Transfer Device (1946)
Composition of Matter for the Storage of Heat (1951)
Heat Storage Unit (1951)
Method and Apparatus for the Storage of Heat (1952)
Apparatus for Storing and Releasing Heat (1952)

Bridgers & Paxton
1956 Life article: "Warm Winter Behind Glass"
1957 Popular Mechanics article: "Albuquerque Solar Building"
1974 Frank Bridgers letter to Congress
1974 Stanley Gilman paper: "Solar Assisted Heat Pumps"
1974 Stanley Gilman report: Evaluation of the Solar Building (pdf)
1978 Popular Science article: "Higher efficiency with solar-assisted heat pumps"

Raymond W. Bliss
Bliss house archival photos: [1]  [2]
1954 patent: Solar Water Heating System
1955 Life article: "Fresh Face to the Sun"
1976 Bliss article: "Why not just build the house right in the first place?"

Douglas Kelbaugh
1977 article: "Passive Solar Design Using a Two-Story Trombe Wall"
1977 excerpt: "The Doug Kelbaugh House" from Passive Solar Buildings: A Compilation...

Peter van Dresser
1975 Mother Earth News interview
1976 van Dresser paper: "Sundwellings Presentation"
1977 Mother Earth News article: "The Sundwellings Project"
1978 Popular Science article on Sundwellings project

First Village, Santa Fe; Balcomb House
1977 Sandia Nat'l Labs article: "Unit 1 First Village" (pdf)
1979 Mother Earth News article: "Unit One: A Solar Adobe Home"
1979 Progressive Architecture article (pdf)
1980 Balcomb paper: "Performance evaluation of the Balcomb solar house"
1989 New Mexico magazine article on William Lumpkins (pdf)

Wisconsin Solar Energy Laboratory
Arlington House:
     1975 thesis: "The design and predicted performance of Arlington House"
     1977 article: "UW Engineers Design Solar Energy Research House"
     1977 article: "Unique Design Components to Improve Efficiency of Solar Heating System"
1976 John Duffie & William Beckman article: "Solar Heating and Cooling" (pdf)
1976: John Duffie Oral History
1978 DOE report: On Simulation and Design of Solar Thermal Processes
1997: Clayton Smith Oral History

The 1970s-80s: Other houses
1974: Integral Urban House
     1976 Mother Earth News article: "Urban Homesteading: The Integral Urban House"
     1980 Mother Earth News article: "The Integral Urban House"
1975: Decade 80 Solar House
     1975 newspaper article
     1975 The Official article (pdf)
     1976 article "Here Comes the Sun": [1]  [2]  [3]  [4]  [5]
     1978 NASA report: "Instrumentation at the Decade 80 solar house in Tucson, Arizona"
1977: TERA One house
     1977 advertisement
1975: USAFA Solar Test House
     1977: Second Interim Technical Report (pdf)
     1980: Final Interim Technical Report (pdf)
1976: NASA Tech House
     1977 report: NASA Tech House
     1979 report: NASA Tech House; [mirror site] 
1977: ACES Demonstration House
     1976 ORNL report: Design Report for the ACES Demonstration House
     1977: Popular Science article
     1978 ORNL report: Performance report for the ACES demonstration house, August 1976--August 1977
     1978 ORNL report: ACES Demonstration: Construction, Startup, and Performance Report
     1981 Harry C. Fischer paper: "Energy Storage and Time-of-Day Rates"
1980: Carlisle House:
     1981 DOE report: Carlisle house: An all-solar-electric residence (pdf)
**1985: Impact 2000 House
      1984 Popular Mechanics article: "Best New Homes under the Sun"

The 1970s-80s: General Sources
1974 Popular Science article: "Can sunshine heat (and cool) your house?"
*1975 J.K. Page article: "Solar Housing"
1977 Kaiman Lee book: Encyclopedia of Energy-Efficient Building Design: 391 Practical Case Studies
1979 Oregon State thesis: "Passive solar heating residences"
1981 Buck Rogers article: "Taking the Mystery out of Passive Solar Design"
1981 Paul Goldberger New York Times article: "Assessing Solar House Architecture"
**1981 New York Times article: "Energy-Efficient Solar Homes: The Seven Major Types"
New Alchemy publications online
Vintage Solar House Plans

The 1970s-80s: Reports
1974 National Academy of Sciences report: Solar Heating-Cooling of Buildings: Current Building Community Projects
1975 ERDA report: Catalog on Solar Energy Heating and Cooling Products
1975 National Research Council of Canada report: Solar Heating - The State of the Art (pdf)
1976: AIA research report: Solar Dwelling Design Concepts
1976 NASA report: An Inexpensive Economical Solar Heating System for Homes (pdf)
1977 CSU report: Solar Heating and Cooling of Residential Buildings: Design of Systems
1977 CSU report: Solar Heating and Cooling of Residential Buildings: Sizing, Installation, and Operation of Systems (pdf)
1977 HUD report: Passive Design Ideas for the Energy Conscious Architect
1977 HUD report: Solar Energy and Your Home
1978: AIA research report: Solar Architecture (pdf)
1978: AIA research report: Passive Technology (pdf)
1978: AIA research report: Passive Solar Design: An Extensive Bibliography
1978: AIA research report: A Survey of Passive Solar Buildings 
1978: AIA research report: Regional Guidelines for Building Passive Energy Conserving Homes
1978 Congressional report: Application of Solar Technology to Today's Energy Needs
1978 DOE report: Building the Solar Home: Some Early Lessons Learned
1979 DOE report: The First Passive Solar Home Awards
1979 OTA report: Residential Energy Conservation (pdf)
1979 Alex Wilson report: Thermal Storage Wall Design Manual (pdf)
1980 SERI report: Passive Design: It's A Natural
1980 HUD report: Selling the Solar Home '80
1981 HUD report: New Energy-conserving Passive Solar Single-family Homes
1981 Steven Winter report: Passive Solar Construction Handbook
1982 DOE report: A Research Agenda: Energy Conservation in Buildings and Community Systems
1984 SERI report: Passive Solar Performance

The 1970s-80s: State-specific Reports
1977 NASA/JPL report: Solar energy in buildings: Implications for California energy policy
1981 Phillip Tabb paper: "Solar Architecture in Colorado"
1982 report: Path to Passive: Nebraska's Passive Solar Primer (pdf)
1983 report: Nebraska Residential Solar Architecture: A Representative Inventory (pdf)
1987 report: A Builder’s Guide to Iowa’s IDEAL Homes (pdf)

History of Insulation
1928 Cabot pamphlet: "Build warm houses with Cabot's quilt"
1930 Johns-Manville pamphlet: "The Invisible Home"
1931 National Bureau of Standards report: Heat transfer through building walls
1931 National Committee on Wood Utilization report: "House insulation: its economies and application"
1936 Johns-Manville pamphlet: "101 Practical Suggestions for Home Improvements"
1936 Insulite pamphlet: "Facts about roof insulation"
1942 Paul Close report: Building Insulation
1944 Univ of Illinois report: "Fuel Savings Resulting from use of Insulation and Storm Windows" (pdf)
1947 Paul Close report: Thermal Insulation of Buildings
1948 USDA report: "Your farmhouse: insulation and weatherproofing"
1949 Celotex pamphlet: "How you can build better homes at lower cost"
1951 USDA report: Thermal Insulation (pdf)
1965 USDA report: "Thermal insulation for building construction"

History of Superinsulation
Lo-Cal house:
     1976 Univ. of Illinois Small Homes Council publication: "Council Notes: Illinois Lo-Cal House" (pdf)
     1976 Univ. of Illinois Small Homes Council video: "Solar House Design"
     1982 McCulley paper: "Energy Monitoring Results of a Superinsulated Passive Solar Building" (pdf)
Saskatchewan Conservation house:
     1981 Dumont & Orr paper: "Air Tightness Measurements of Detached Houses in the Saskatoon Area" (pdf)
     1983 Dumont & Orr paper: "Low Energy Houses" (pdf)
     2011 Monte Paulson article: "Step Inside the Real Home of the Future"
     2013 Harold Orr article: "The Saskatchewan Conservation House in Retrospect"
     2015 Harold Orr interview by Ben Adam-Smith: [audio] [transcript (pdf)]
Leger house:
     1980 Popular Science article: "Double-Wall House" (Leger house)
1981 Popular Science article: "Super-insulated Houses"
1982 Mother Earth News article: "Super-Insulated House Plans"
1982 National Research Council of Canada report: Thermal Envelope Houses (pdf)
1983 Brookhaven Natl Lab study: Blouin Superinsulated House
1986 Chicago Tribune article: "Superinsulation Just Waiting To Be Discovered"
2010 Martin Holladay presentation: "The History of Superinsulated Houses in North America" (pdf)
2010 Martin Holladay blog: "Solar Versus Superinsulation: A 30-Year-Old Debate"

Recent Sources (historical)

2000 Mother Jones article: "Prodigal Sun"
2001 Adam Rome book chapter: "From the Solar House to the All-Electric House"
2012 Jim Laukes presentation: "Notes on the Taproots of Passive House: 1933-1984" (link to video)
2012 Harvard Business School report: “Power from Sunshine: A Business History of Solar Energy" (pdf)
2013 John Perlin article: "Seven of the Greatest Solar Stories Over the Millennia"
2013 John Perlin article: "Let It Shine: The 6,000-Year Story of Solar Energy"
2013 John Perlin article: "How Ronald Reagan Turned Out the Lights on Solar Power"
2013 John Perlin lecture: "Let it Shine"