1835 - First Quakers to Salem, Iowa
1838 - First Monthly Meeting Established (Salem)
1848 - First Quarterly Meeting Established (Salem)
1863 - First Iowa Yearly Meeting Session Held
1863 - James Stanley First Recorded Minister in Yearly Meeting
1865 - First Yearly Meeting House Built
1873 - Founding of Penn College
1877 - Conservative Separation
1886 - Pastoral System Inaugurated
1893 - Cessation of Separate Women's Meetings
1893 - Setting off of Oregon Yearly Meeting
1895 - Setting off of California Yearly Meeting
1908 - Setting off of Nebraska Yearly Meeting
1912 - New Yearly Meeting House Constructed
1913 - 50th Anniversary of Yearly Meeting
1938 - 75th Anniversary of Yearly Meeting
1948 - Quaker Heights Camp Grounds Dedicated
1963 - 100th Anniversary of Yearly Meeting
1965 - First Yearly Meeting Youth Assistant Hired
1968 - First Spring Meeting of General Body of Representatives
1970 - Yearly Meeting Sessions Moved to William Penn College Campus
1981 - Dedication of Yearly Meeting Office Building
1988 - First Woman Clerk of Yearly Meeting
1988 - 125th Anniversary of Yearly Meeting