Fire Apparatus Model Forums

I recently purchased several hand made vintage fire apparatus and am trying to get information on them. Each of the models are numbered and have initials on them. I am posting a picture of a deluge wagon lettered for Pittsburgh as an example....... and information on who made these would truly be ap...

Just curious if anyone has an accurate list of what crash trucks cursor made, what departments were released and what the product numbers where ? I am also looking for a source to fill out my collection.