Shapleigh's was a huge supplier to hardware stores in the early part of the 1900's.  They had their own brands, which included Diamond Edge.  Many of their products are extremely collectible. 

I have an original copy of their catalog #400 published in 1935 and plan to publish the contents here.  However, given that they have 3,000+ pages, that will take some time.

In the meantime I have added an automatic Ebay search for Shapleigh items.  The results are shown below.  Clicking on one of the links will take you directly to that auction on Ebay.