Series consists of approximately 1,000 colour and black-and-white photographs, including slides, negatives, and 1 CD-ROM; and a framed Picasso print (65 cm H x 36 cm W) that hung in Petersen's apartment on Brenton Street, Halifax.

The photographs depict Petersen, his family members and friends, and landscapes and scenery of places where he lived, worked and traveled.

Photographs that were enclosed in letters or greeting cards are in Family Correspondence (series 6) and Friends Correspondence (series 7).

Series consists of correspondence Henry Drake Petersen sent to and received from family members. It includes letters, greeting cards, printed emails, and photocopies of Petersen's handwritten letters to his mother, grandmother, siblings, aunts, nieces, and cousins. The files include photographs that were enclosed with correspondence to Petersen.