Any help ID-ing this frame would be greatly appreciated. The stamp on the BB reads : K 17 4044. Any thoughts would be great. I've heard possible Schwinn B series, Mead Ranger, Shelby. I'm a rookie and confused by the branding and manufacturers of these frames (who built them and who sold them etc.). Thanks for the help!!!
(traced in pencil for photo)
(traced in pencil for photo)