Creator
- Johnston, C. H. (47)
- French, Wiiliam A. (36)
- Cooper, William Skinner, 1884-1978 (31)
- Harlem Branch YMCA (20)
- American Terra Cotta Company (19)
- Geological Survey (U.S.) (8)
- Canada. Department of the Interior (6)
- Geological Survey of Minnesota (5)
- Lundie, Edwin H. (4)
- Rand McNally and Company (4)
- YMCA of the USA (4)
- Bell Museum of Natural History (3)
- Canada. Natural Resources Intelligence Service (2)
- Child Study Association of America (2)
- Guilmin, L (2)
- Hall, Helen (2)
- Hill, Sam (2)
- John Bartholomew and Son (2)
- Mattson, C.H. (2)
- McGill-Warner Co (2)
