LISBON FALLS — Jim Baumer is a Maine-based author who writes about people and the places that define them. His latest book of essays, “The Perfect Number: Essays & Stories Vol. 1,” touches down in the town where he grew up.

Baumer uses the essay effectively to write about being raised in the Catholic Church (“The Altar Boy”), he offers a paean to the late John Gould, one of Maine’s most notable writers (“Writing about John Gould”), as well as tracing the decline of small towns in Maine, like his hometown of Lisbon Falls (“Goin’ Back”).

He will be at the Lisbon Library, 28 Main St., at 6 p.m. Wednesday, Sept. 24. Refreshments to follow. Part of the proceeds from books sold will be donated by the author to the Friends of the Lisbon Library. For more information, call 207-353-6564.