Ken, You can find a couple of obits at fultonhistory.com.
The Highland Democrat, Peekskill-January 31, 1920
Thomas O'Donnell died at this home at Manitou, Saturday last, of pneumonia. He was in his 49th year. The remains were brought to Peekskill and the funeral services were held at 9 a.m. from the undertaking parlors of J. J. Dorsey at 9 a.m. Monday and from the Church of the Assumption at 9:30. The interment was in Assumption Cemetery. The deceased is survived by two brothers, Lawrence, of Manitou, and Patrick of Peekskill.
Peekskill NY Evening Star-November 1945
Some of the words are hard to see in Lawrence O'Donnell's obit. Maybe you will have better luck when you look at it but here is some of the information in the obit.
L. O'Donnell of Garrison Dies
Lawrence O'Donnell died at his home on Manitou Road, Garrison. He had been in ill health for some time. He was the son of Lawrence and Catherine K ( it looks like maybe Kern, Kerr, Keir) O'Donnell and the widower of the late Mary Morrissey O'Donnell. Surviving are one daughter, Marie O'Donnell, of Manitou and two sons, Lawrence, of New York City, and Raymond, of Manitou.
Funeral services will be held Wednesday from the Dorsey Funeral Home, Park Street. Interment at Assumption Cemetery.
Good luck in your search. Kathryn