Our contact, Vince S. provided a few of the following. Thanks for the scans.
Below is an ad from a newspaper announcing the theatrical presentation of SASQUATCH: THE LEGEND OF BIGFOOT (directed by the late Ed Ragozzino, 1977). This film was loosely based on the adventures of Roger Patterson. In many ways, it appropriated the ideas and concept of Patterson's unfinished docudrama, parts of which were shot around Yakima, WA in 1967. The expedition that provided us with the famous Patterson-Gimlin Film (PGF) was to provide background footage and investigation of footprint finds in the Bluff Creek area, and was originally part of this movie project.