California Midwinter International Exposition. Lovely illustrated Exposition design showing Fair Grounds & California Bear, franked with 1893 2¢ Columbian tied by "Oakland, Cal." duplex cancel, cover with printed return address of Women's Congress Auxiliary, slightly reduced at right, Extremely Fine. Estimate  $75 - 100. $0 (Image)

California Midwinter International Exposition. Brown illustrated design with Somers & Co. corner card, on locally addressed cover, 1890, 2¢ carmine tied by 1894 San Francisco machine postmark, fresh and Very Fine. Estimate  $200 - 300. $0 (Image)

California Midwinter International Exposition. Litho design with Los Angeles corner card at top, on 1893, 1¢ Columbian entire to Palmdale, Cal., uprated with 1¢ Columbian tied by "Los Angeles, Cal., Mar 5, 94" duplex postmarks; stamp with minor perf toning, Very Fine. Estimate  $150 - 200. $0 (Image)

California Midwinter International Exposition. Litho design with readdressed corner card, on cover to North Vallejo, Cal., franked with 1890, 2¢ carmine tied by "San Francisco, Cal. Dec 6, 1894" machine postmark, Very Fine. Estimate  $75 - 100. $0 (Image)

California Midwinter International Exposition. Litho design with Slade Lumber Co. corner card, on locally addressed 2¢ Columbian entire, canceled by San Francisco, Cal. duplex postmark, Very Fine. Estimate  $75 - 100. $0 (Image)

California Midwinter International Exposition. Green design with J. Cordon compliment imprint at top, on locally addressed wrapper frank with 1¢ Columbian tied by San Francisco oval handstamp; minor edge wear, otherwise Very Fine. Estimate  $300 - 400. $0 (Image)

California Midwinter International Exposition. Litho design on 1887, 2¢ green entire to Avers, Belgium, canceled by "San Francisco, Jun 13, 1894" machine postmark and uprated with cork canceled 1890, 3¢ purple (slight fade), Very Fine. Estimate  $200 - 300. $0 (Image)

California Midwinter International Exposition. Dark green illustrated design with The Land of Sunshine Fruit and Flowers imprint at top, on 1893 locally addressed cover, franked with 1890, 2¢ carmine tied by San Francisco duplex postmark; file fold, otherwise Very Fine. Estimate  $200 - 300. $0 (Image)