A few hard-to-read ones in here...
C10877(???) - Dennison, Minnesota, United States
C14205 - Essex, Maryland, United States
F15540 (15640?) - St. John's, NL, Canada
H16917 - Ucluelet, British Columbia, Canada
H17278(???) - Emmitsburg, Maryland, United States
H22650 - Whitby, Ontario, Canada
J14273 - Salt Lake City, Utah, United States
No good geographical matches by letter in this batch...