Correspondence consists of letters between Mavis Gallant and William Weintraub, including 8 letters from 1950 and 1951, 12 letters from 1984 to 1993, 10 letters from 1994, 11 letters from 1995, 9 letters from 1996, 14 letters from 1997, 16 letters from 1998, 13 letters from 1999, 15 letters from 2000, and 19 letters from 2001.

Subseries consists of letters from Moore to Weintraub written between 1951 and 1998 (603 letters) and from Weintraub to Moore between 1950 and 1999 (280 letters).

Subseries consists of letters from Richler to Weintraub written between 1951 and 1971 (210 letters) and from Weintraub to Richler written between 1951 and 1972 (123 letters).