I have a copy of an Application for Membership to the Sons of the American Revolution which includes the following information about Osborn Allen
1) Listing of children Osborn Allen (Otis' father) had with Corrie F. Sterry 2) U.S. Army Certificate of Disability for Discharge 3) Department of the Interior, Bureau of Pensions form, dated 1898 4) Department of the Interior, Bureau of Pensions form, dated 1915 5) Waterville Maine newspaper article on Funeral for Osborne Allen 6) Record of Death for Osborn Allen (I believe it says it's from Winslow, ME)
Others listed in the application are Otis Allen (Osborns son), Miles Allen (also son of Osborn)Philip Allen (d.o.b.Jun. 5, 1909) and his wife Irene (nee Bolduc), Philip Allen Jr. (d.o.b. 1936), Dale Allen (d.o.b. 1941), Glenn Allen (d.o.b. 1943).
I'd be happy to scan it into PDF and share if anyone is interested.