Join the Somerville Historic Preservation Commission and ArtsUnion on Sunday, September 25, for a free walking tour of historic Union Square. “Tracking Progress: How Somerville Yards – Rail, Stock, and Brick – Have Shaped Union Square,” will step off from the SCATV building at 90 Union Square at 2 p.m., and conclude at 4:30 p.m. at Juliet 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.

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, Betsy Allen, at 617-625-6600 x2323 or BAllen@somervillema.gov.