Photographs are divided into seven subseries:
A - Architecture
B - Arts (Theatre, music, dance, arts, crafts)
C - Business & industry
D - Churches
E - Communities in Northwestern Ontario
F - People, families, & genealogy
G - Organizations

Records of the Thunder Bay Co-Operative Dairy, Ltd, which operated from 1928 to 1969.

The records include: the Board of Directors' meeting minutes, which provide detailed accounts of the Dairy's management and operation from its founding in 1928 through its eventual liquidation in 1972; a time book listing employee wages and deductions; a financial journal outlining the Co-Op's final years in production; and a folder containing various news clippings and written notes.