Sentry, or Beacon Hill, 4G 304 225 Wheildon, William Willder, 1805=1892, Sentry, or Beacon Hill; the beacon and the monument of 1635 and 1790, Illustrated with plans and heliotype plates, Concord, Mass., Author's Private Printing Office, 1877, vii, 117 p. illus, 24 em,