- Above Izamal1
- Above the west end of Lake Chapala, midway between Jocotepec and S. Juan Cosala1
- Acapulco and vicinity1
- Acapulco de Juárez1
- Addison5
- Addison Tp.1
- Adrian. Behind 1365 Trenton Rd.1
- Aetna Twp. Sec. 19 NW 1/4, T13N, R10W Rosy Run Creek at 2-track crossing about 3/4 mile west of 230th Ave.1
- Aetna Twp. Sec. 31 SW 1/4, T13N, R10W Eisenhower Rd at 230th Ave. northwest of corner.1
- Aetna Twp., East side of 220th Ave. Powerline right of way through USA land. Eisenhower to 0.5 mile north.1
- Africa, Sierra Tacuichamona1
- Agricultural College1
- Agricultural College, Lansing.1
- Aguascalientes7
- Ahuacatlán1
- Alabama17
- Albert Twp. T29N, R2E, Sec.34, S.W.1/4; 300 ft. S. of West Fish Lake at the Hunt Creek Fisheries ca. 10 mi. S. of Atlanta1
- Alberta3
- Albuquerque2
- Alcona13