K.C. Monarch's JC Hartman, First black player in Houston?

[Brownieand45sfan]

I see from eBay that JC Hartman has a new book out:

http://tinyurl.com/ydw4uo

His history is certainly interesting ... playing in the late (50s) Negro Leagues, playing form the A.A. Houston Buffaloes and then becoming a major league Colt for two-seasons. Then out of pro ball. And on to another first in law enforcement. If you look at his Baseball Reference entry http://www.baseball-reference.com/h/hartmj_01.shtml, the manner in which the Colts acquired JC was weird.*

Question:
Was JC the first black ballplayer on the Houston Buffaloes minor league squad?

* Before 1962 Season: Returned to the Houston (American Association) by the Chicago Cubs after expiration of minor league working agreement.

Before 1962 Season: Obtained by the Houston Colt .45's from the Houston (American Association) as part of a minor league working agreement.
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Emmett McAuliffe

[rat618]

The first black player I remember was Bob Boyd who came from the Negro Leagues in the 50's and went on to play for Washington and Baltimore in the Majors.