The MetroPostcard list of postcard publishers, printers, and distributors plus a discription of how postcards were made.
The MetroPostcard list of vintage postcard publishers and printers beginning with M p1.
Here are a number of references which can be used to research old antique postcards and to date vintage postcards. Many postcard history and postcard artist.
Logo arranged by initials Trinks___Co_logo. This type is far more common than plain typeset initials. With or without artwork added. Some were registered as.