Henry Repeating Arms had nothing to do with the 1860 Henry until they made a modern reproduction of the 1860 Henry.
Not to try and take away from them or their quality, and I'm sure they don't mind people thinking they made the 1860 Henry, but New Haven Arms Company made the original 1860, a company that would later become Winchester. Henry Repeating Arms did name their company after the man who designed the 1860, and essentially claimed the rights to the name as it's own along with variations but other than that they have no connection to Benjamin Tyler Henry the designer of the 1860.
You won't find it without googling but Henry Repeating Arms was founded in 1997, less than 20 years ago. But it's been 20 good years and they have done very well with the Henry name, and in that 20 years they have done what they promised, I think that even though they lack any real connection to the first Henry rifle, BT Henry would of liked their work quite a lot.