1950 Vintage Advertising Royster Guano Co Fertilizer Calendar Memo Book
1950 Vintage Advertising Royster Guano Co Fertilizer Calendar Memo Book.
1958 Advertising Royster Guano Plant Food Co Fertilizer Calendar Memo Booklet
Inside has a calendar for 1958. There is a silo calculator on 1st page and a quantity of seed used per acre in planting. Inside back has a 1959 calendar.