Number 1 (March 1910) /Oregon Counties/: Their Creations and the Origins of Their Names. by Frederick V. Holman (address at OHS annual meeting) /Opinion of William D. Fenton/: On the Power of the Legislature to Increase the Number of Justices Constituting the Supreme Court of Oregon Notes"
Number 2 (June 1910)
/Financial History of the State of Oregon: Oregon's Public Domain - The Sale of Oregon's Lands/ F. G. Young /Recollections of a Pioneer of 1859: Lawson Stockman/ B. F. Manring /What I Know of Dr. McLoughlin and How I Know It/ John Minto Ogden journals editorial notes by T. C. Elliott The Peter Skene Ogden Journals /An estimate of the character and services of Judge George H. Williams/ Harvey W. Scott /Note (Counties)/ Frederic V. Holman
/Number 3/ (September 1910) Peter Skene Ogden, Fur Trader. by T. C. Elliott (annual OHS address) The Late George H. Williams. by T. W. Davenport Financial History of the State of Oregon: Public Expenditures. by F. G. Young "Documents" "Notes"
/Number 4/ (December 1910) The Rise and Early History of Political Parties in Oregon. by W. C. Woodward The Peter Skene Ogden Journals. by editorial notes by T. C. Elliott Journal of Peter Skene Ogden: Snake Expedition, 1827-1828. by as copied by Miss Agnes Laut in 1905 "Corrections" "Document" Financial History of Oregon: Use of Public Credit by the State of Oregon. by F. G. Young