American Standard Radiators and Convectors
A nice mailer with lots of information from 1946. Thanks to Kirby Slear for scanning and sharing. He notes, "You will notice the name of the individual who sold these, Harvey Mull, plumbing and heating, in RD#1 Selinsgrove. That is about 50 miles north of Harrisburg on the Susquehanna river. Harvey is the man my parents bought the house from I grew up in. That house had a nice baseboard hot water heating system."