Lothar Simon, whose long publishing career included ownership of Sheridan House, died March 12 at the age of 74. After finishing school in Germany, Simon worked in London at Foyle’s, then the world biggest bookstore. He emigrated to the United States in 1961 and worked at several bookstores in Washington D.C. He moved to New York in 1966 to become sales manager at Humanities Press and later was hired by Longman Group Ltd. to launch their American subsidiary, a company he served as president from 1973 to 1981. He then acquired Sheridan House Inc., a publishing company which he ran with his wife Jeannine until 2011 in Dobbs Ferry, New York.