Thanks for sharing a nice video:
Other helpful 17th Indiana info is in Marcot, 2nd Edition, page 51, lower right side.
There, Marcot presents details that Col. Wilder first wanted Henry repeaters, and asked the New Haven Arms Company for 900 Henrys.
When New Haven declined, Col. Wilder asked The Spencer Repeating Rifle Company for approximately 1,400 Spencers.
I have read, but cannot recall a reference about some members of Wilder's unit also individually purchasing and carrying Henry's through the remainder of the War. Smiles and Happy Holidays.
Very respectfully,
El Supremo/ Kevin Tinny