Large circle of people in a field with stage and banner

Front:
DAM COM AR

Back:
enridge Sep1-21-1912 Dear Friendmis Dettmer Buth has omne 10 lb be bag Breck einer 3500 all dong bine, CAINE SEP 21 6PM 1312 PLMN as ever his Oman NAME AND VADDRESS HERE Mrs. & U. Dettmer Bridgewater بعده (