>>10034099I'm not an expert for vintage stuff because I'm a '94 baby, but I did some Rebrickable-fu and found two leads based on the obvious stuff. The window print is 6376 Breezeway Cafe like
>>10034108 said. The mail door seems like it's from 7819 Postal Container Wagon. Check the inventories for both links and see if your parts line up. Hopefully a more experienced trainfag can pin down axles and stuff.
https://rebrickable.com/sets/6376-1/breezeway-cafe/?inventory=1#partshttps://rebrickable.com/sets/7819-1/postal-container-wagon-covered/?inventory=1#parts 