Yes, can't add a lot except it's a carefully posed photo by this family! Those horses are in indeed in awfully good shape ( and
@Mrs. V , that mare does look pregnant! ), all of them have been spit-polished! They're not what were referred to as ' blood horses ', but those things would have been not very useful for farm work? 1890-1900, maybe.
We're so used to permanent press clothing it's easy to miss how pristine is this man's shirt! That took a heavy iron and a ton of starch. If this is your family it's a delightful treasure!