I've seen the 45 but have it on the beach gems CD. Band was legendary for frat parties in southeast in the late 60's (song probably recorded 1965-`1969).
There other record I've Been Told/All I Can See Is Your Love about 1966 was self-produced by band on Slave Records, P.O. Box 306, Jesup, GA
Here are a couple of links to more info on the group:
https://www.heybabydays.com/King_David_&_The_Slaves.pdf
https://sr64.blogspot.com/2004/08/king-david-and-slaves.html
https://southerngaragebands.com/KingDavid.html
Chris