From Ancestry.com Wiki
Lincoln is a town in Massachusetts. It was formed in 1754 and was previously called Concord/Lexington/Weston. It can be found in Middlesex county and is a part of the Southern registry of deed district. For more information, contact the county at 16 Lincoln Rd., Lincoln 01773. On the attached map, Lincoln is shown as 26 in Middlesex county.
For information about the state of Massachusetts see Massachusetts Family History Research.