Wow I posted this last week and never checked back. I never dreamed that anyone would question this being Chadwick. I was just looking to see if there were other persons of interest in the photo. The photo is in fact Henry Chadwick. Provenance:The photo came to the market directly from his great grandaughter. If she is agreeable, I'll post her comments as I am in contact with her regularly. She got a kick out of anyone questioning that it was Henry. Some of you don't need to quit your day jobs to go into photo identification!
Her mother, Henry's granddaughter is believed to be the one who wrote his name on the photo. This was in their family and is the earliest known tintype of Chadwick. So, back to the original reason of the post: Does anyone recognize any of Henry' pals in the photo?