[3] The William H. Gratwick was sold multiple times: in 1899, 1902, 1907, and, in 1910 to the Chicago & Duluth Transportation Company.

[3] On October 30, 1924, the Glenlyon left Thunder Bay, Ontario[5] carrying 143,000 bushels of wheat.

[3] On the 31st, the captain decided to resume the trip, but the winds picked up again and the Glenlyon headed for shelter in Isle Royale's Siskiwit Bay.

[3] In the early morning hours of November 1, 1924 the ship ran aground on the reef now bearing its name off Menagerie Island and near the Isle Royale Light while steaming toward Siskiwit Bay.

[3] Other vessels from the Great Lakes Transportation fleet rushed to the scene, as well as the Coast Guard, and most of the crew was rescued by late morning.

[3][8] Two crewmembers who had gone overboard in a lifeboat for an unknown reason were missing; a search was made for the men and they were found early the next morning ashore in Siskiwit Bay.