From Workbook to Accompany Everyday Biology by Curtis & Sherman, 1940.

From Astronomical Myths, Based on Flammarion's "History of the Heavens" by J. F. Blake, 1877.

From The Art Teacher by Pedro J. Lemos, 1939.

From The Tarot Of The Bohemians by Papus, 1892.

From Modern English Writing by Douglas Bement, 1937.

From Homes With Character by Hazel Thompson Craig, 1970.

From The Tony Sarg Marionette Book by F. J. McIsaac, 1921.

From Community Health by C. E. Turner, 1935.

From The Science of Everyday Life by Van Buskirk, Smith & Nourse, 1931.

From Hobbies Weekly, 1951.

When prisms undo each other's work.  From Exploring the World of Science by Charles Lake, 1939.

From Science Experiences with Inexpensive Equipment by Carleton John Lynde, 1939.

"A thousand years in thy sight are as one day" (Psalm xc, 4).  From Man's Acievement, The Age of Science and Democracy by Edwin Pahlow, 1935.

Color wheels from Art in Home and Clothing by Trilling & Williams, 1936.

From Time Stages 1 & 2 and Background Information, A Unit for Teachers by Roy Richards, 1972.

From Machines and the Men Who Made the World of Industry by Gertrude Hartman, 1939.

From Astronomical Myths, Based on Flammarion's "History of the Heavens" by J. F. Blake, 1877.

From Sentence Analysis by Diagram by Henry Edgar, 1915.

From Wee Wisdom, 1956.

From Who Flys the Saucers by Riley Hansard Crabb, undated.