TICONDEROGA Thursday, May 10, will be a signal day in the recent history of the town of Ticonderoga. At 3:15 p.m. that day, there will be a major presentation on the economic revival and historic preservation of downtown Ti. The event will be sponsored by the Ticonderoga Main Street Partnership. It will feature a 90-minute presentation by Ti Main Streets mentor, the National Trust Main Street Center (NTMSC). NTMSC, based in Washington, D.C., will present its analysis of Ticonderogas economic position and prospects as the climax of a three-day visit to Ti by two NTMSC Program Officers. The NTMSC team, consisting of Teresa Lynch and Todd Barman, will spend the first part of that week in extensive interviews with the active members of the Ti Main Street Partnership and with town and country authorities, merchants, realtors, bankers, educational institutions and cultural and preservation groups, among others. Lynch and Barman will base their presentation on the knowledge they accumulate during that period, as well as from two prior trips to Ti made by Lynch. The public is invited to the May 10 program, which will include a question-and-answer period. The presentation will take place at North Country Community College on Montcalm Street in downtown Ticonderoga (next to the Community Building). There is no charge, and the program will be adjourned no later than 4:45 p.m. There is on-site parking, behind the Community College. Further information may be had from Brick Howe at 585-2746/7762 or firstname.lastname@example.org.