322-3 Mexico Sonora Covers

5801- Scott 338, CUMPAS TO HERMOSILLO, WITH BACK STAMP

5813- Scott 339, NACOZARI TO AGUA PRIETA, CLEAN AND NICE

5806- Scott 322(3),23-24, HERMOSILLO TO NOGALES, WITH BACK STAMP, CORNER DING LL

5790- Scott 322-3, 36 (2), MAGDALENA TO NOGALES, WITH BACK STAMP, DING LL CORNER

5799- Scott 323-4, 36, HERMOSILLO TO MAGDALENA, W/BACK STAMP, CORNER DING LL, SECOND EARLIEST KNOWN DATE FOR 1¢ #336