5933- 1915, ON PIECE (2) #435, WITH POSTAGE DUE 4¢
5934- 1914, #386, WITH POSTAGE DUE 2¢ PAID, WITH #385, TO NOGALES
5936- 1930, WITH FIVE DIFFERENT REVENUES USED AS POSTAGE
5936- 1960, #909 ON FIRST DAY COVER, NICE AND CLEAN
5937- 1930, REGISTERED (2) #671 ON COVER, MONTERREY TO AUSTRIA
5938- 1935, (1) PAIR AND (1) SINGLE ON REGISTERED COVER TO LONG BEACH, CA, PROOFS USED AS POSTAGE
5939- 1917, RAIL ROAD CANCELS TO SAN FRANCISCO, CA
5941- 1933, CERTIFIED WITH 2 AIR MAIL STAMPS + 1 SURFACE STAMP TO GERMANY
5944- 1867 GUADALAJARA PROV. TO GUADALAJARA TO ZAMORA
5945- 1920, REGISTERED FROM MEXICO TO GERMANY
5946- 1935, REGISTERED, (2) 10¢ AND (2) .20¢ PROOFS USED AS POSTAGE, FROM MEXICO TO LONG BEACH, CA
5947- 1936, PORT OF CALL, ACAPULCO, U.S.S. FAIRFAX
5948- 1938, PORT OF CALL, AT SEE OF ACAPULCO – U.S.S. POMPANO
5949- 1935, PORT OF CALL, GUAYMAS – U.S.S. WORDEN
5950- 1935, PORT OF CALL, MAZATLAN, U.S.S. WORDEN
5951- 1935, PORT OF CALL, LA PAZ, U.S.S. CUSHING
5952- 1938, PORT OF CALL, MANZANILLO, U.S.S. POMPANO
5953- 1937, PORT OF CALL, PICHILINQUE, U.S.S. PERKINS, BEAUTIFUL RED BOAT SEAL ON BACK
5956- 1805, .3¢ ON ENVELOPE OPENED ON ALL SIDES, WITH (2) RED CHIUTLA SEALS, TO ATLIXCO, WITH BACK STAMPS, OFFICIAL
5957- 1804, .3¢ ON ENVELOPE OPENED ON ALL SIDES, HUEJOTZINGO, PUEBLA CANCEL TO PUEBLA, WITH BACK STAMP, PURPLE OFFICIAL SEAL, OFFICIAL
5958- 1806, .16¢ ON FRONT, WITH PURPLE ZACATLAN, PUEBLA SEAL TO CHIGNAHUAPAN, OFFICIAL
5959- 1808, .16¢ ON FRONT WITH PURPLE ZACATLAN SEAL TO PUEBLA, OFFICIAL
5960- 1807, .40¢ ON FRONT, CHOLULA CANCEL, WITH PARTIAL RED SEAL TO CHOLULA, OFFICIAL
5961- 1901 .3¢, PORTION ENVELOPE, OPEN L & R FROM GABRIEL CHILAC TO TEHUACAN, PURPLE SEALS, BACK STAMPS, OFFICIAL
5962- 1910, .23¢ ON FRONT, CERTIFIED PUEBLA TO TEHUACAN, PURPLE SEAL, OFFICIAL
5963- 1903, .25¢ ON FRONT, CERTIFIED PUEBLA TO TEHUACAN, OFFICIAL
5964- 1901, .19¢ WITH CERTIFIED FRONT TEPEACA TO ATLIXCO, TEPEACA, OFFICIAL, FRONT
5965- 1902, .20¢ CERTIFIED ON PIECE, CHIGNAHUAPAN TO ZACATLAN, ALA TRISTE SEAL, FRONT, OFFICIAL
5966- 1901, .30¢ TETELA, PUEBLA TO ZACAPOAXTLA, PUE., SEAL TORN, COMPLETE LARGE ENVELOPE, BEAUTIFUL, OFFICIAL
5967- 1902, .10¢ ON PIECE, CHIGNAHUAPAM, TO ZACATECAS, WITH A LA TRISTE SEAL, FRONT, OFFICIAL
5968- 1907, .6¢ ON FRONT, SAN JUAN DE LOS LLANOS TO CUYUACA, WITH RED SEAL, OFFICIAL
5969- 1902, .3¢ ON FRONT, ZACATLAN WITH PURPLE ZACATLAN SEAL, OFFICIAL
5970- 1907, .10¢ ON FRONT, ATLIXCO, PUEBLA TO PUEBLA, OFFICIAL SEAL, OFFICIAL
5971- 1900, .35¢ ATLIXCO, PUEBLA TO PUEBLA, RED SEAL, BACK STAMPS AND WAX SEAL, CERTIFIED AR COVER, BEAUTIFUL, OFFICIAL
5972- 1905, #O63 ON COVER TO MARSEILLE, BACK STAMP, UNIQUE CANCEL, OFFICIAL
5973- 1905, #O61 ON PC TO SWITZERLAND, SLIGHT CREASE, OFFICIAL
5974- 1902, .5¢ TEHUACAN TO TECAMACHALCO, WITH TEHUACAN PURPLE SEAL, OPENED L & R, OFFICIAL
5975- 1910, .10¢ CHOLULA TO CHOLULA, PUEBLA,VILET ATLIXCO SEAL, OFFICIAL
5976- 1905, .3¢ PUEBLA TO ATLIXCO AND PARTIAL ATLIXCO SEAL, OPENED L & R, OFFICIAL
5977- 1905, .3¢ CHIGNAHUAPAN TO ZACATLAN, WITH A LA TRISTE SEAL, ZACATLAN CANCEL ON BACK, OFFICIAL
5978- 1904, .3¢ ZACATLAN TO PUEBLA, PUEBLA SEAL, BACK STAMPS, OPENED L & R, OFFICIAL
5979- 1904, .20¢ TEHUACAN TO PUEBLA WITH VIOLET TEHUACAN SEAL, BACK STAMPS, OFFICIAL
5980- 1904, .10¢ PUEBLA TO PUEBLA WITH PURPLE HUEJOTZINGO SEAL, BEAUTIFUL, OFFICIAL
5981- 1877, TO PUEBLA FROM MORELOS, NICE, LETTER INCLUDED, OFFICIAL
5982- 1908, CERTIFIED TO US FROM TACUBAYA, TACUBAYA SEAL, BACK STAMPS AND WAX SEAL, NICE, OFFICIAL
5983- 1899, SALINAS VICTORIA, N.L. TO NUEVO LEON, WITH VICTORIA SEAL, OFFICIAL, EX SHIMMER
5984- 1924, SALAMANCA, GUANAJUATO TO MEXICO, OFFICIAL
5985- 1931, MEXICO TO MEXICO, WITH EAGLE SEAL, OFFICIAL
5986- 1916, FROM MEXICO TO BROOKLIN, NY, SEAL ON BACK, OFFICIAL
5987- 2002, MEXICO, WITH LARGE PURPLE SEAL ON BACK CUAUTLA, MORELOS, CENTRO HISTORICO, OFFICIAL
5988- 2002, MEXICO, WITH LARGE BLACK SEAL ON BACK CUAUTLA, MORELOS, CENTRO HISTORICO, OFFICIAL
5989- 1900, #O55 ON COVER, GYJON, ESP, WITH BACK STAMP, OFFICIAL
5990- 1893, #O2 ON COVER, TO BRAVO, WITH BACK STAMPS, OPENED L & R, OFFICIAL
5191- 1897, #O2 ON COVER TO GALEANA, N.L. – MONTERREY AND LINARES CANCELS, SEAL ON BACK, OFFICIAL
5192- 1892, #O2 ON COVER TO GALEANA, N.L., MONTERREY AND LINARES CANCELS, VERT. CREASE, SEAL ON BACK, OFFICIAL
5993- 1892, #O2 ON COVER TO GALEANA, N.L., MONTERREY AND LINARES CANCELS, SEAL ON BACK, OFFICIAL
5994- 1892, #O2 ON COVER TO GALEANA, N.L., MONTERREY AND LINARES CANCELS, SEAL ON BACK, OFFICIAL
5997- 1928, 15 APRIL, SEE PHOTO, LIGHT PURPLE CACHET
5998- 1928, 15 APRIL, SEE PHOTO, BLACK CACHET
5999- 1931, 5 DECEMBER, SEE PHOTO, LIGHT PURPLE CACHET
6000- 1931, 19 JAN, SEE PHOTO, LIGHT PURPLE CACHET
6001- 1931, 22 MAY, SEE PHOTO, PURPLE CACHET
6002- 1931, 15 MAY, SEE PHOTO, PURPLE CACHET
6003- 1929, 9 MARCH, SEE PHOTO, PURPLE CACHET
6004- 1929, 9 MARCH, SEE PHOTO, BLACK CACHET
6005- 1929, 9 MARCH, SEE PHOTO, DARK PURPLE CACHET
6006- 1929, 9 MARCH, SEE PHOTO, PURPLE CACHET
6007- 1929, 9 MARCH, SEE PHOTO, DARK PURPLE CACHET
6008- 1928, 1 OCTOBER, SEE PHOTO, BLACK CACHET
6009- 1928, 1 OCTOBER, SEE PHOTO, PURPLE CACHET
6010- 1930, 20 APRIL, SEE PHOTO, BLACK CACHET
6011- 1930, 20 APRIL, SEE PHOTO, PURPLE CACHET