Clearly yellow skin, feathering in red, straight combs....first breed that comes to mind: Rhode Island Reds. Production Reds or Red Sex-links/Red Stars are also possible. Color wise, the red is dark enough that New Hampshire is unlikely.
Clean legs, so no cochin/brahma/French marans. Shape/comb makes me say they're not Red Wyandottes (yes they exist, but hard to find). Red Leghorns also exist, but are rare enough to be unlikely too. No crest so all those + crosses are also out.
Currently best guess: Rhodies or one of the production derivatives.