Walter Alois Weber (May 23, 1906 - January 10, 1979) was an American mammalogist, animal artist, and illustrator for National Geographic.
He earned a Bachelor of Science in zoology and botany, and he worked with Carl Rungius, a big game painter.
He contributed to many books and magazines, and was hired in 1936 by the National Park Service as a field artist after a year of wildlife researching in Oklahoma and Texas.
During this time he worked under contract for the National Geographic Society and for private collectors, and did ink drawings for the book Meeting the Mammals.
Over 250 of his paintings (some signed with his pseudonym "Al Kreml") were featured on stamps issued by the National Wildlife Federation from 1940 to 1961.
He was very upset when his art was plagiarized, but was not opposed to its use when requested, including the Territory of Papua and New Guinea's use of some of his bird paintings for their postage stamps.