Westfield was the parent company with a number of other brand names, Columbia probably being the most well known. Example of the westfield/columbia sprocket.
Westfield was a company from Massachusetts. Their house brand bike was Columbia. They made bikes for many retailers, like Sears who sold with the Elgin badge.
Looks Shelby to me. Slick is one of the resident Shelby experts, but I don't know if he checks here often. Mostly on thecabe.
I love my morrow hubs. They do have date stamping on the hub if you can still make it out. It will be a single number, single letter code. The number designates the quarter of the year 1,2,3,4 and the letter translates to the year.