Great recommendation. I always describe it as if you imagine Booker T Jones was born in Jamaica, he would sound like Jackie Mittoo.
I'll play along and recommend something that I listened to a few times over the weekend...
Little Anthony & the Impreials (different record actually, but it's an old vinyl out-of-print thing and I couldn't find an imige online)
With a career spanning the 50s through the 70s, these guys had a remarkable string of soul hits, stretching to the 50s doo wop classic Tears on My Pillow all the way through Shimmy, Shimmy Ko-Ko Bop, Hurts So Bad, I Miss You So, and Take Me Back.
Essential R&B. Just grab any carreer spanning hits package and enjoy.