Cat & Mouse Press will hold a party from 1 to 3 p.m., at the Lewes Public Library to celebrate the sale of its 25,000th book, in conjunction with the summer launch of “Beach Secrets,” the latest book in the Rehoboth Beach Reads series.

Free and open to the public, the party will feature book sales by Browseabout Books, author signings, imprinted merchandise, refreshments and children’s activities.