The collection consists of geological maps, aerial photographs, and mining and geology publications collected by Fockler during the course of his career as a consulting geologist. The collection also contains material relating to a mineral exploration in northern Quebec that Fockler was involved with in the 1940s.

The collection is arranged into five series: Air photos of northern Ontario and Quebec; Air photos of Ontario highways; Geological maps; Mining and geology publications; New Quebec mineral exploration project.

Fonds documents logging production at a shanty (winter logging camp) near Whitestone, Ontario. Fonds contains one logging record book.

Collection consists of one mining company stock certificate.

Fonds documents the issuing and transfer of Lois Lake Gold Mines Limited stocks, and contains one register.