A variety of other animals were kept on the farm, but these were mainly pets of the children.[77] In addition to their horses and dogs, certain of the Straights' animals acquired reputations of extraordinary extent. In particular were a goat which was presented to the Straights by the author and journalist Eric Sevareid,[78] a mule acquired from the Alexandria SPCA, and a flock of Canada geese which eventually became the subject of a special bulletin by the Audubon Society to prevent local naturalists from erroneously reporting them as migrants.[79] During these years of residence at Green Spring Farm, Michael Straight served as editor and publisher of _The New Republic_ magazine, wrote three books, and served on the governing boards of several organizations active in international affairs.[80] These activities brought to the farm many visitors whose accomplishments in politics, literature, science, and the arts were nationally and internationally recognized. Some of the distinguished visitors to Green Spring Farm during these years included scientists Julian Huxley and Leo Szilard, authors Aldous Huxley and Saul Bellow, poet Dylan Thomas, Supreme Court Justice Hugo Black, and political leader Hubert Humphrey. The farm also was a visiting place for distinguished journalists from all parts of the United States and many foreign countries, including Soviet Russia, when they came to Washington. An account of one of these visits, written by one of the foreign journalists, is set forth in appendix G.[81] The farm became well known in the community of which it was a part as it was the scene of numerous festive community gatherings when the neighbors from the immediate area joined the Straights and their guests to celebrate such special events and holidays as the Fourth of July and to enjoy dinner, games, and discussions under the trees. With the departure of the Straights, active farming operations ceased. During their occupancy, fundamental changes in the character of Northern Virginia's development brought the era of farming to an end and ushered in an era in which this region became part of the social and economic system centered in Washington. Intensive subdivision and establishment of commercial service facilities became the highest and best uses of the land as population growth in the National Capital area rose at a rate which led other parts of the United States. Outsiders moving into Northern Virginia and Washington residents seeking to move from the central city into the outskirts filled up the open spaces of Fairfax County at a rate of over 1,000 new residents per month.[82]