Textual material, photographs, and maps from the 1970s to 2017 donated by Eric L. Johnson regarding the Whistler Mountain iron mines, his Cattle Trail Project [Pemberton Trail?] in the 1990s, Northair Mines Ltd. and their mine on Mt. Sproatt, and other mines in the Sea to Sky area.

Letter from Eric L. Johnson to the Whistler Museum from October 5, 2017 including additional material about the iron mine at Whistler Mountain.

Textual documents donated by Eric L. Johnson relating to mining in the Sea to Sky area and trail maintenance.

Letter from Eric L. Johnson to the Whistler Museum from August 17, 2017 with his account of the Whistler Mountain iron mine, penned to fill in gaps of the "Whistler Iron Mine" article written by Sarah Drewery for the Whistler Question newspaper.

Notes on former mine sites and operations between Whistler and Squamish, penned by Eric L. Johnson in October 2017.