“The oldest person in Southwest Harbor is Capt. Jacob S. Mayo, to whom, in recognition of his remarkable age, the Boston Post, not long ago, presented a gold-headed cane. Capt. Mayo is 90 years of age.” - “The Island of Mount Desert Register with The Cranberry Isles 1909-10,” compiled by Lawton, Jordan & Maddox, Auburn, Maine, Published by the Lawton-Jordan Co. - 1909-1910
"Southwest Harbor's oldest citizen, Capt. Jacob Mayo, passed his 91st birthday. He was presented with a handsome pair of gloves by the O.E.S., of which he is a member. On June 15 he called on relatives at the head of the harbor, about a mile from his home, walking the distance." - The Bar Harbor Record, June 22, 1910 quoted on p. 29 in The Bar Harbor Times, June 23, 2010.
“Mayo - Jacob Schoppy Mayo (1818-1912),” Southwest Harbor Public Library, accessed May 29, 2023, https://swhpl.digitalarchive.us/items/show/10197.Item 14165
