C.A. Preston Dairy, Monongahela PA

This milk bottle from C.A. Preston dairy which at one time was in Monongahela is up for sale on eBay. From the sellers description:

This tall round quart is embossed C. A. Preston, Phone 4112R 3, Monongahela, PA. in the slugplate. Also has a wavey line embossed around neck and Sealed 11 PA. embossed on shoulder. Bottle shows wear from use and staining, no chips, cracks or dings. Would be a good candidate to be cleaned professionally. From Washington County. First one of these I have run across in my many years of collecting.

Does anybody have any information about C.A. Preston dairy?