It's Downtown Peekskill Restaurant Week thru 3/9 (a really poorly advertised promotion, they had it last year and I never even heard about it). Lunch is $15 and dinner is $25. Birdsall House's DPRW menu is on their website. I don't think anyone else has theirs posted, but Gleasons told me that for dinner you get your choice of any appetizer and any entree, and then a dessert. Lunch is less of a selection but the menu works for me so we may try it.
Here's an article about it on Lohud with the list of restaurants.
Note that Zeph's is not participating. For some reason they're not even a member of the Downtown Peekskill BID (business improvement district, I believe). Rather disappointing.
Oh, and Peekskill has brought in someone new to run their Farmers Market with the hope of moving it to Pugsley Park and expanding it. I think that's great, there is no excuse why it cannot be way better than it is, and given that the Yorktown market (which was better than Peekskill's) is very unlikely to ever return, a decent market should be able to draw better than the old one did.
Bonus news: here's an article from a few weeks ago about a guy by the name of Louis Lanza who has run a number of Manhattan restaurants (the article lists Josephina, Josie East and Josie West, Citrus Bar & Grill and Better Burger) and has bought up some properties in Peekskill and is planning to open several restaurants.