Lydon Library will be closed Monday, May 19th, through Friday, May 23rd due to roof construction. If you have any questions, please get in touch with us at ask@uml.libanswers.com.
This link accesses the 195 pages of census data from the city of Lowell in 1840 -
The link below accesses a filtered search of the FamilySearch database of the 1840 census using the search criteria of "Lowell, MA" and "1840" -