- R-A33747 (1)-(7)
Part of Robert S. Niven fonds
(1)-(3) A caterpillar tractor used to draw the elevating grader on the work of stripping top-soil for the purposes of building a crossing over shallow Bitter Lake. (4) CPR construction equipment. (5) Blasting rock, camp for workers in background. (6) A crossing in the process of being built at Bitter Lake. (7) W. Van Buskirk's outfit at Bitter Lake.