from the site:  http://dsmc.info/gtewksbury.shtml

There are three cemeteries on the grounds of Tewksbury Hospital with at least 10,000 graves in them. Tewksbury Hospital opened in 1854 and its cemetery directory dates back to 1891 and contains 9,342 names. Patients who died between 1854 and 1891 are not recorded, so the total number of graves is not known. The grave markers, three-inch high metal circles with crosses in the middle, are rusted and easy to miss because of the overgrowth of weeds. Although on occasion community groups have done some clearing of overgrowth in the cemeteries, the hospital has no money in its budget for regular maintainence. Curt Florey, formerly the president of the board of trustees at the hospital would like the cemeteries cleaned up and preserved. But this is not a goal one person can accomplish -- there needs to be a restoration committee. If you are interested in helping form a committee, please contact Curt.