National Geographic : 1888 Oct
11 The Society was organized in January, 1888, under the laws of the District of Columbia, and has at present an active member ship of about two hundred persons. But there is no limitation to the number of members, and it will welcome both leaders and followers in geographic science, in order to better accomplish the objects of its organization. October, 1888. Correspondence with the Society should be addressed to Mr. GEORGE KENNAN, Corresponding Secretary, No. 1318 Massa chusetts Avenue, Washington, D. C.