These are photos of a trucking company that my great-uncle and grandfather (pictured) operated in Washington state from 1928 thru 1958.
I am trying to identify the year and model of the trucks. I believe there are at least three trucks: No. 18, No. 19, and possibly No. 16 in the photo at the warehouse. It looks as though all of the "big" trucks are Macks.
Also, if anyone can identify the black flatbed in the next to last photo, that would be appreciated.
Thanks for your help!