Join the Somerville Historic Preservation Commission and ArtsUnion on Sunday, September 17, for a free walking tour of historic Union Square. The tour will step off from the Central Branch of the Somerville Public Library, 79 Highland Ave., at 2 p.m., and conclude at 5 p.m. at Nu Cafe for complimentary refreshments. The tour will be led by Ed Gordon, New England Chapter President of the Victorian Society in America. For more information and to RSVP, contact Brandon Wilson at BWilson@somervillema.gov, or 617-625-6600, x. 2532.

A rain date has been set for Sunday, September 24.

Individuals with disabilities who need auxiliary aids and services for effective communication, written materials in alternative formats, or reasonable modifications in policies and procedures, in order to access the programs and activities of the City of Somerville or to attend meetings, should contact the City’s ADA Coordinator, Nency Salamoun, at 617-625-6600 x2323 or NSalamoun@somervillema.gov.