1922 – Born in Charleston, West Virginia on the 16th of October.
1940 – Sullivan took his first active role in the civil rights movement by helping to organize a march on Washington, D.C.
1943 – He attended the Union Theological Seminary.
1945 – Sullivan and Grace moved to South Orange, NJ where Sullivan became pastor at First Baptist Church. Five years later, Leon and Grace moved to Philadelphia where Leon took on the role of pastor of Zion Baptist Church.
1950 – He served eventually increasing its membership from 600 to 6,000 – making it one of the largest congregations in America.
1958 – He asked that Philadelphia’s largest companies interview young blacks.
1963 – Life Magazine cited Reverend Sullivan as one of the 100 outstanding young adults in the United States.
1964 – Reverend Sullivan founded Opportunities Industrialization Centers of America in an abandoned jail house in North Philadelphia.
1971 – Sullivan joined the General Motors Board of Directors and became the first African-American on the board of a major corporation.
– Sullivan was awarded the in Spingarn Medal by the NAACP, in 1987 the Four Freedoms Award for "Freedom of Worship" by the Franklin and Eleanor Roosevelt Institute.
1988 – Reverend Sullivan retired from Zion Baptist Church.
1995 – Sullivan was given the Bishop John T. Walker Distinguished Humanitarian Service Award by Africare an award given "to recognize those whose work has made a significant impact on raising the standard of living in Africa".
1999 – He was awarded the Eleanor Roosevelt Award for Human Rights by Bill Clinton.
2001 – Died on the 24th of April.