Not up to snuff your what has been shown here, but....
The SF Giants megaphones are all made by Rah-Fone of San Francisco. There are other variations I don't have.
The Tacoma Giants was made in Vernon, Iowa.
The beige one was made by Sealright Sanitary Service. They made the paper inner caps for the old glass milk bottles. They also made milk and cream containers in this shape. I believe this is one of those containers, before it got its wax coating. I got this back when you could still find good stuff on ebay.
