Mausert Block is a historic block at 19—27 Park Street in Adams, Massachusetts designed in the Romanesque architectural style. It is one of the four brick buildings on Park Street along with the P. J. Barrett Block, Jones Block, and Armory Block.The Mausert Block was built in 1900 and 1901 by George and Conrad Mausert, brothers and local businessmen. Walter J Donovan established his law offices on the second floor from 1920 until 1970. F.W. Woolworth moved into 19-21 Park Street in 1930s.