WASHINGTON REDSKINS PRACTICE and PHOTO SHOOT (1940S) Rare 8MM Color Home Movie 

It appears that the Redskins utilized that site as their training camp in 1941 and 1942, before moving to Balboa Park in San Diego, CA and then to Occidental College in Los Angeles where they remained for many years before returning to the East Coast.

​@denissuperczynski7983 Thanks for the info. I was looking for sights on the east coast and didn't even think about it being in California.