Here, Charles Wesley introduced him to the founder of the Association for the Study of Negro Life and History (ASALH), Carter G.
[1] In 1945, McConnell returned to his studies and received his Ph.D. from New York University under the instruction of Dr. Ralph Betts Flanders.
After graduating from Howard, McConnell spent a few years teaching at Elizabeth State Teachers College but was interrupted by World War II.
[1] He joined the United States Army in 1942 and served as a statistical clerk, CFA-4, Second Lieutenant and researcher in the Industrial College of the Armed Forces.
[1] McConnell's most well-known work is his book, Negro Troops of Antebellum Louisiana: A History of the Battalion of Men of Color, published in 1969.
Some of the more notable publications appear in The Journal of Negro History, The North Carolina Historical Review, The Maryland Pendulum, and the Afro-American and Baltimore Sun newspapers.
[1] He and his wife, Catherine Taylor McConnell, served as the guest editors of the Journal of the Afro-American Genealogical Society for the spring and summer edition of 1991.