Mark Trent Goldberg, executive director of The Ira and Leonore Gershwin Trust, died suddenly of a heart attack May 18, 2005, in San Francisco, according to death notices placed in national papers. Mr. Goldberg worked closely for 22 years with the estate established by the late Leonore Strunsky Gershwin, which holds and manages the copyrights of her late husband, the lyricist Ira Gershwin.

He also managed the Gershwin Archive, worked closely with the Library of Congress, and in 1999, restored material for the City Center Encores! production of The Ziegfeld Follies of 1936. The concert cast and score were also recorded.

He penned synopses for several studio recordings of Gershwin shows that appeared in the past 20 years.

Mr. Goldberg was the son of Gene and Mary Goldberg of San Jose, California.