Well now, 7th. Ill. Cavalry you say ? would that be B co. ?
I was a member of the Mounted unit (C co. ) under Maj. Karl Luthin. I commanded E co. (Florida troopers) aka 2nd Florida Cavalry Inc.
We've done many an event and films together in 30 years.
We still partner up on Movies projects ( he... with his vast amount of props & set dressing , and I as a Production Designer )
The Seventh Ill. Cavalry were issued Sharps & and later Spencers, ( the Cavalry was never issued Henry's ) but troopers might have purchased some.
The 7th. Ill. Infannrty did purchased the Henry.
(The men of this Regiment served from Elgin and vicinity (Company A, Kane County), Mattoon and vicinity (Company B, Coles County), Aurora and vicinity (Company C, DuPage and Kendall Counties), Litchfield[1], Lincoln and Atlanta and vicinity (Companies D, E and H, Alexander, Logan and Montgomery Counties), Springfield and vicinity (Companies G and I, Sangamon and Fayette Counties) and Carlinville and vicinity (Companies F and K, Macoupin County). The Seventh was the only regiment in the Union Army that purchased its own guns and armed itself with the Henry rifle.)