Robert Frederick Foster

Robert Frederick Foster (May 31, 1853 – December 25, 1945)  of New York City, known as R. F. Foster, was a  memory training promoter and the prolific writer of more than 50 nonfiction books. He wrote primarily on the rules of play and methods for successful play of card, dice, and board games. Alan Truscott wrote 20 years after his death that Foster "had been one of the great figures in whist and bridge" for 60 years.

Biography
R. F. Foster was born in Edinburgh, Scotland on May 31, 1853, the son of Alexander Frederick and Mary E. Macbrair, and "connected with some of the best families in Great Britain". He was educated as an architect and civil engineer. He emigrated to the United States (probably in 1872) where he engaged in surveying and gold prospecting and then in manufacturing before turning to the memory training and writing businesses in 1893.

Foster married Mary E. Johnson in 1891 and became card editor for the New York Sun in 1895. He filled that position to 1919 when he undertook the same role for the New York Tribune. He was also a columnist for Vanity Fair. The treatise Foster's Complete Hoyle: An Encyclopedia of All the Indoor Games Played at the Present Day, first published in 1897, has been called his great achievement. It provided descriptions and laws of more than 100 indoor games and was revised frequently during his lifetime, then by others after his death. One of his last editions was included in the 1939 New York World's Fair Westinghouse Time Capsule, to be opened in 5000 years.

Having written numerous whist and bridge books by 1935, he was considered "the dean of living bridge authorities". At that time he directed duplicate bridge at the St. George Club in Brooklyn (Hotel St. George). At some time he lived four years in Germany; at another time, "three years in South Africa, where he lectured and taught bridge in sixty-five towns." He crossed the Atlantic 97 times in all.

Foster was a member of several card, athletic, and golf clubs—including Knickerbockers Whist and the Cavendish Club—and a member of the Society of American Magicians. He died December 25, 1945, in Eastham, Massachusetts, survived by one daughter.

Memory trainer
Foster left employment at one of the largest manufacturing houses in Baltimore to become the business manager for "Professor Alphonse Loisette" (later identified as Marcus Dwight Larrowe), a lecturer and promoter of systems and methods to develop and improve memory skills. Foster resigned in April 1888, wishing not to be associated with Loisette's unethical personal and business practices and accusing him of being a "humbug and a fraud". Foster subsequently joined William Joseph Ennever and others in a similar business venture, the Pelman School of Memory Training, a correspondence school based in Chicago and London. He delivered lectures and wrote training materials, most notably The Secret of Certainty in Recollection, plainly stated, simply taught: The Pelman–Foster System, a book of five correspondence lessons dating from around 1905.

Fiction book author
Foster also wrote a detective novel titled Cab no. 44, which was also translated into German.

Contributions to whist and bridge
Foster invented or developed:
 * Self-playing Cards for Whist, Self-playing Cards for Bridge, and an improved design for Whist Markers.
 * The Foster Echo, an unblocking play against notrump intended to show count.
 * The Rule of Eleven. Foster claims to have invented the Rule of Eleven in the winter of 1880–81. The rule is explained in the first edition of his Foster's Whist Manual of 1890 and is a means for opener's partner to infer how many cards held by declarer are higher in rank than the card led; likewise, declarer can infer the same information about his right-hand-opponent's holding.
 * The first set of laws for contract bridge.