Just got these over the weekend. A 24" Schwinn Excelsior skip-toothed bike with un-original stem and bars... and a 3 speed equipped speedster with 26" tires and Schwinn script brakes that I haven't seen before and a raleigh style front fender.
Check the serial number on that Speedster. That pinched front fender is likely Schwinn. I had an early 60s Traveler with the same fender but in chrome. I have a Speedster too but with chrome rounded fenders. The camelback frame is because it is a short frame, larger frames had straight top tubes.