I did a bit of library work which ended with two pararaphs in Alan Axelrod,
The International Encyclopedia of Secret Societies and Fraternal Orders
(New York: Facts on File, 1997).  Although Axelrod cites no sources, I
suspect he relies on a century-old, pioneering encyclopedia of fraternal
societies by Albert C. Stevens (1899; 2nd ed., 1907).  (Unfortunately, I
lack immediate access to Stevens.)

In any event, Axelrod presents the racial story differently than did I.  He
says that a white grand lodge of the Grand United Order of Good Samaritans
sponsored what was always an African-American temperance fraternal benefit
society, the Independent Order of the Good Samaritans and Daughters of
Samaria.  He goes on to say that the state lodges of the parent white
organization exercised authority over the local African-American lodges
which had no state lodges (grand lodges) of their own.

Otherwise, Axelrod echoes temperance authorities.  The organization was
founded in New York City on 14 September 1847, had as its motto, "Love,
Purity, and Truth," and admitted women as well as men to membership.

I remain moderately skeptical until somebody does research in contemporary
source materials.