[1] The Lyceum's first meeting was held at the home of Sidney Moss who had purchased his land in Oregon City from Dr. John McLoughlin of the Hudson's Bay Company (HBC).
[5] Other notable members during its existence include:[5][6] Henry A. G. Lee, William H. Gray, Lansford W. Hastings, Elisha Applegate, Jesse Applegate, Asa Lovejoy, Sidney W. Moss, Robert Newell, James W. Nesmith, William C. Dement, Medorem Crawford, Hiram Straight, William Cushing, Philip Foster, Theophilus Magruder, Daniel Waldo, Peter G. Stewart, Isaac W. Smith, Joseph Watt, Frank Ermatinger, Albert E. Wilson, Jacob Hoover, John Minto, Barton Lee, and John P. Brooks.
[2] At the time neither the United States nor Great Britain could claim the Oregon Country under the terms of the Treaty of 1818 signed at the conclusion of the War of 1812.
[7] McLoughlin's attorney L. W. Hastings, introduced a resolution on his behalf to the Lyceum as follows: Resolved, That it is expedient for the settlers of the coast to organize an independent government.
[7]The resolution was adopted but at that same meeting George Abernethy of the Methodist Mission introduced a competing issue following the vote to be discussed the next week.