43,000. Singleton retired as Teledyne Chairman in 1991, but remained on the Board. Roberts assumed the Chairman position, and relinquished direct management. Many companies had been sold during the prior several years, and in 1993, the number was further reduced from 65 to 21, primarily through consolidations. Beginning in late 1994, Teledyne was subjected to hostile takeovers attempts. Finally, on August 15, 1996, an agreement was reached to merge Teledyne with Allegheny Ludlum, a steel and specialty metals firm headquartered in Pittsburgh, Pennsylvania, and form Allegheny Teledyne, Inc. At that time, Singleton still owned 7.1% of the Teledyne stock. He retired from the Allegheny Teledyne Board in 1997. In 1999, Allegheny Teledyne was split into three independent corporations, including Teledyne Technologies, that encompassed several of the older remaining companies. Rancher Late in his life, Henry Singleton began investing in land. In the mid-1980s, Singleton started buying ranches in New Mexico and, later, California. Beginning with the acquisition of the San Cristobal Ranch south of Santa Fe, in a relatively short time he had bought more than twenty ranches. Most were along the U.S. Route 285 corridor from Santa Fe to Roswell with others in San Miguel and Quay Counties, and the Shepherd Ranch in Guadalupe County. Singleton was not just a dilettante, but was directly involved with the ranch operations as well as in efforts to preserve the many archaeological features on the land. Within a 14-year period, Singleton purchased 28 other ranches, making the Singleton Ranches the largest cow-calf operation in New Mexico. Singleton's last acquisition was a ranch in California. At the time of his death, he owned more than 1.5% of New Mexico. Now managed by his children, Singleton Ranches own in New Mexico and California, and is one of the nation's top cattle- and horse-breeding operations. The Singleton Family is ranked as the seventh largest land-holder in America. Personal life While at MIT, Singleton became active in science fiction fandom. He and a friend drove to Chicago to attend Chicon, the 2nd World Science Fiction Convention, and in November 1940 he published the first issue of Nepenthe, a fanzine focused on science fiction poetry. In its two issues, Nepenthe included work by A. Merritt, Donald A. Wollheim, Stanley G. Weinbaum, Robert A. W. Lowndes, John Christopher, Wilson Tucker, Russ Chauvenet, John B. Michel and Harry Warner, Jr. Singleton had met the former Caroline Wood of Cambridge,