Letter, 6 February 1972
Letter, 6 June 1972
Letter, 26 June 1971
Note, February 1971
Letter, 4 September 1971
Lois Winslow-Spragge Fonds
Lois Winslow-Spragge Fonds
Letter, 6 June 1969
Letter, 30 June 1969
"My Uncle Dr. William Bell Dawson" by Lois Winslow-Spragge
Letter, 9 August 1946