The Last Green Valley National Heritage Corridor – the last stretch of dark night sky along the coast between Boston and Washington, D.C. – will be co-hosting a program from 2 to 4 p.m. April 2 at Norwich's Leffingwell House Museum.

Camilla and Greg Farlow will give private tours of the house at 348 Washington St., a circa 1675 Colonial with a 13-star centennial flag. Originally a two-room house, by the mid-18th century it had evolved into an elegant home and currently is filled with pieces representative of its architectural evolution.

Each quarter, the Last Green Valley hosts volunteers and staff from different historical societies, libraries and history-based organizations so participants can learn from each other.

For information about this event, contact Marcy at 860-774-3300 or email Marcy@tlgv.org to RSVP. Other information is available at the Last Green Valley’s Facebook page and website, www.thelastgreenvalley.org.