"Let the professor teach you how to write love letters. 32 love letters for the following types of women: gold digger, dream girl, nit-wit, ditzy, cold, etc. 32 love letters for the following types of men: traveling salesman, grouch, all beloved, conservative, egotist, etc." 

Original poster published by the Exhibit Supply Company circa the mid-late 1940s. This poster would have hung above machines on boardwalks or arcades. They would often promote games, fortune teller cards, or similar attractions. 

 Year: c. 1945