Billhead dated July 25, 1901 from Becker Brothers, makers of Quaker Overalls. Not that much out there on this company. All that I've been able to dig up is that they moved from their North Tonawanda, NY address to Butler, PA in 1912. I also found reference to Quaker Overalls in ads appearing in the Pittsburgh Press up to 1922. If anyone has any other info on this firm, please pass it along.