Correction: An earlier version of this article offered inaccurate information about public meetings and approvals for the Park Street Streetscape project. Planning Board and City Council meetings held in 2009 and 2010 that were referenced in the article included discussions about a master street tree plan. The Project regrets the error.

A shop owner’s letter to the president of the Park Street Business Association has prompted other merchants to voice their concerns about communications between merchants and the association’s leaders.