The National Wildlife Federation (NWF) is the United States' largest private, nonprofit conservation education and advocacy organization, with over six million members and supporters, and 51 state and territorial affiliated organizations (including Puerto Rico and the Virgin Islands). The NWF strives to remain "A national network of like-minded state and territorial groups, seeking balanced, common-sense solutions to environmental problems that work for wildlife and people." On March 1, 1934, President Franklin Delano Roosevelt appointed political cartoonist Jay Norwood "Ding" Darling to be the chief of the U.S. Biological Survey. At Darlings behest, the president oversaw plans to convene a conference in Washington D.C. to unite individuals, organizations and agencies interested in the restoration and conservation of wildlife resources. The conference took place from February 3–7, 1936, and was called the North American Wildlife Conference. At this conference, an organization called the General Wildlife Federation was created; Darling was elected president. The first annual meeting was held March 3, 1937, in St. Louis, Missouri. The General Wildlife Federation became the National Wildlife Federation in 1938. The numbers of members of this Federation increased from 2.3 million in 1968 to 4.1 million in 1974.