Phone number of the Edson Cemetery is 978-970-3323. If you have other relatives buried in the Lowell area, are you aware of this great genealogy resourse: http://library.uml.edu/clh/GenRes.Html

Also, if you check http://www.raogk.org/massachu2.htm
Random acts of genealogical kindness, there is someone on the list that works at the Edson cemetery, and will help.