To go along with some of the other old stuff I posted yesterday, here's the June 1925 calendar from the Big Creek theater (Tom Mix on Saturday the 13th must have been big).
A couple other things from the hydroelectric project engineers. The initial report from 1 January 1913 has an embossed paper cover and is bound with string.
Much of the engineering publications are to showcase their big projects, such as this one from Thebo and Starr Engineers and Constructors.