The building known as the city building situated on Lots 7, 8, 9, 10, 11 and 12, Block 112, in the original town, now City of Mattoon, shall be used for municipal offices and for municipal purposes as follows: Offices of the Mayor, City Clerk, City Treasurer, and Police Department, Fire Department and by its members for sleeping rooms, City Engineer, Board of Local Improvements and such other city offices and departments as may be accommodated therein from time to time.
('68 Code, § 2.39)