Book the date.

A celebration is in the works for the 45th birthday of the Fairfield Woods Branch Library, the busiest branch library in the state.

An all-day celebration of the anniversary is planned Saturday, from 10 a.m. to 4 p.m. at the library, 1147 Fairfield Woods Road.

The branch library's origins precede its current home, dating to the 1930s, when a branch of the Fairfield Public Library was first established in Stratfield School, then relocated to the Jackman Avenue fire station and later to a site at Andrew Warde High School before a permanent home was built in 1969.

The birthday program, which will start with a welcome from First Selectman Michael Tetreau, will include a crafts show, exercise demonstrations, sing-alongs, a visit by Fairfield fire trucks and, of course, birthday cake.

Other events during the month to celebrate the birthday will be a raffle of a handmade flag, the proceeds of which will benefit the branch library's new Sewing Center; a scavenger hunt to learn more about the library, and a search for patrons with the longest history of using the branch to put on its wall of fame.

For more information, visit www.fairfieldpubliclibrary.org, or call 203-255-7308.