Cheryl Trowbridge Miller is a third cousin three times removed from Lieutenant Colonel Charles T. Trowbridge. She wrote the following article about Col. Trowbridge at http://trowbridgefamily1.tripod.com/col.ct.trow.html.
Cheryl also co-authored a book
about Col. Charles Tyler Trowbridge and the men who served under him:
"Nineteenth Century Freedom Fighters: The 1st South Carolina Volunteers"
Col. C. T. Trowbridge at the African American Registry
You can read Susie King Taylors' book:
"Reminiscences of My Life in Camp with the 33d United States Colored Troops Late 1st S. C. Volunteers: Electronic Edition,
about her experiences with Lt. Col. Trowbridge's company, and also includes correspondence between her and Lt. Col. Trowbridge, which is posted at the website of the University of North Carolina, Chapel Hill Library.