1950's - Dennison Photo Mount Corners

This is an un-opened envelope package of Dennison Photo Mounting Corners made by the Dennison Manufacturing Co., Framingham, Mass.
The package is from the 1950's and includes 100 pieces of black gummed corners for mounting photos or postcards in an album. - (100 for 10¢)
On the back is a list of all the different colors available and also other available Dennison stationary products. -- Dennison Manufacturing was founded in 1844 in Brunswick, Maine by brothers Aaron and E.W. Dennison. The company first began producing jewelry and watch boxes. Dennison then began producing paper products in the early 1900's such as shipping tags, crepe paper and decorations. They moved their manufacturing to Framingham in 1878 and remained there until 1990 when they merged with the Avery Adhesives Company.