Private Mailing Card Era (1898-1901)During this era, private publishers and printers were allowed to print, sell and use the wording "Private Mailing Card" at the back of the card with the lines for the name of the addressee and the address. The words "Private Mailing Card - Authorized by the Act of Congress on May 19, 1898" and "This side for the address only" were required to be printed on the back of all cards not issued by the government. Regulations also required that these cards be slightly smaller in size at 3 1/4 by 5 1/2 inches and printed in light colors of buff, cream, or gray. This class of postcard has "undivided back" similar to those of the pioneer era.
Finding Philippine private mailing cards are quite scarce.
Private Mailing Cards 1898