I copied this page from an auction listing for a 1930 Square D Co. catalog. The person wanted a large price for the catalog otherwise I would have bought it. In the listing the index says the next page showes other Square D Co. insulators avaliable. I desperatly wanted this page and asked the seller if they would make a copy of the pages, which I would purchase from them, hopefully to show other pieces and pintypes avaliable. They wouldn't respond to my hearts discontent so hopefully I can come across a catalog or pages showing them. I am happy to get the page showing the strains, even if it is just copied off their listing on the internet auction. Time will tell. Hope you enjoyed these pictures and info. Take care stay safe and be well to all.