Selling all those half-price tickets must have taken its toll on Theatre Development Fund executive director Jack Goldstein.

With his contract due up this year, the respected head of the group recognized the world over for their TKTS booths in Times Square and World Trade Center has elected not to renew his post but instead pursue other interests. This leaves TDF Chairman John F. Breglio searching for a replacement.

Goldstein, with the organization since Jan. 1998, worked before that as the special assistant to Actors' Equity president Ron Silver. He also served as the coordinator of the Broadway Initiatives Working Group and co-chaired the Theatre Advisory Council to the Mayor's Office of Film, Theatre & Broadcasting.

Founded in 1968, Theatre Development Fund has a mission to support new productions and broaden audience bases for commercial theatre. It is now the largest not-for-profit performing arts service organization in the U.S. Its best-known program is the Times Square TKTS booth, where theatregoers can buy tickets at a discount of 25 or 50 percent.

Other TDF programs include theatre and dance ticket subsidies, the TAP program for the hearing and visually impaired, a voucher program for inexpensive theatregoing, group sales to hospitals and seniors, a costume collection of more than 75,000 garments and accessories, Teachers Night On Broadway, awards to honor costume designers and producers, and courses for novice producers to learn their craft (Commercial Theatre Institute). -- By Christine Ehren