Penny Black print run was 286,700 sheets, containing a total of 68,808,000 stamps. Many were saved, and in used condition they remain readily available to stamp collectors. The only known complete sheets of the Penny Black are owned by the British Postal Museum. In addition to the general issue of the Penny Black, a similar stamp intended for official mail was produced, with the letters "V" and "R" replacing the crosses in the top corners. Because the general public quickly accepted the postage stamps and ridiculed the Mulready stationery produced at the same time, vast supplies of Mulready letter sheets were given
Penny dreadful such titles as "Boys' Leisure Hour, Boys' Standard, Young Men of Great Britain", etc. As the price and quality of other types of fiction works were the same, these also fell under the general definition of penny dreadfuls. Appearing in the 1860s, American dime novels were edited and rewritten for a British audience. These appeared in booklet form, such as the "Boy's First Rate Pocket Library". Frank Reade, Buffalo Bill, and Deadwood Dick were all popular with the penny dreadful audience. The penny dreadfuls were influential since they were, in the words of one commentator, "the most alluring and low-priced