Eric,
I have no info on Harlem Hellcats. Arthur Little a Captain then Major of the regiment [369th] wrote: From Harlem to the Rhine. Seems to focus on his experiences. An 18 page chapter entitled The Vosges Mountians preparing for a new offensive, Oct 7-Nov 10th, 1918
Excerpts:
...Oct 13th loaded 725 men/officers plus horses mules and vehicles by train from Chavanges.
Arrived Belfort on the 15th. Train to Vauthiermont, hiked to Roppe. By camions Oct 16th to Valley of Thur, in Alsace. The regiment billeted in St Amarin, Moosch, Bitschwiller, Willers and Thann.
Reported to Col Gastinel 84th Infantry of France to relieve 1st Btln 1st Reg of Infantry in the Quartier Sectueur Collardelle. Includes report dated 28th Oct on an attack upon CR Collardelle. Also a condolence note from Le Colonel Hatton. Includes 2 photos one of headquarters company and the other of the ceremony of decoration of regimental flags and colors 161 division, Plains of Munchausen 13th Dec.

You may try this or let me know if you are looking for specific information

John