Alan Valentine Tishman (12 October 1917—January 13, 2004) was an American real estate developer. He was the head of Tishman Management and Leasing Corporation. October 12 is the 285th day of the year in the Gregorian calendar (286th in leap years). ... 1917 (MCMXVII) was a common year starting on Monday of the Gregorian calendar (see link for calendar) or a common year starting on Tuesday of the 13-day slower Julian calendar. ... January 13 is the 13th day of the year in the Gregorian calendar. ... 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... A real estate developer (American English) or property developer (British English) makes improvements of some kind to real property, thereby increasing its value. ...

He helped bring coop apartment ownership to New York City and was one of the first brokers to bring office tenants to Park Avenue.

His acitivism landed him on the master list of Nixon political opponents. He was a trustee of the American Museum of Natural History and served as vice president of the UJA Federation. A master list of Nixon political opponents was compiled to supplement the original Nixons Enemies List of 20 key people considered opponents of President Richard Nixon. ... The American Museum of Natural History is a landmark of Manhattans Upper West Side in New York, USA, at 79th Street and Central Park West. ...

References

• Misonzhnik, Elaine (Jan 21, 2004). Visionary, Alan Tishman, dead at 86. Real Estate Weekly