The Sears Elgin keeper is a 1930 depression-era bike; post pictures of ones like those, (in individual posts with better pictures), in this pre-1933 forum.
Maybe post pictures of more classic balloon bikes of the "streamlining era" in the classic 1933-1965 forum.
Maybe post pictures of the newer post-1965 bikes later, (derailers, safety-act reflectors etc.), and in a much later thread(s).
(And maybe gently wash the dirty ones, with some mild soap and water).
Maybe start with the other bikes that you may have also considered as almost worth keeping (?).