Polish Legion fieldpost concerning the moving of Field Post Office No.378 to Przemyśl
Polish Legion fieldpost concerning the newly formed Polish Reinforcement Corps within Fieldpost Office No. 378 in Premyśl
In September 1916, austrian fieldpost postmark is changed from number 355 to number 378
In October 1916, austrian fieldpost postmark is changed from number 118 to number 389
Polish Legion fieldpost concerning the creation of the newly formed German Polish Army