
Chuck Thomas
There are only a couple of releases by Chuck Thomas that I  know – and both are strong southern style soul, despite the fact that Band Box  were located in Denver, CO and the majority of their output was pop/country.  Nevertheless 
Let Our Hearts Be Our Guide is very strong deep soul, great rap  and a lovely “little label” arrangement and girl chorus. Thomas has some nice  gospel touches in his committed vocal. I also like the waltz 
What Can I Do  which features some fine horns and another class vocal.
Discography
Let our hearts be our guide / Why baby ~ BAND BOX 360 (mid 60s)
  What happened baby / 
What can I do ~ BAND BOX 365 (mid 60s)