The red one is 1957 I believe, built by AMF for Firestone. The serial number should be under the bottom bracket, and there should be a "G" stamped to the right of the serial, if there's something else please post a picture. The second wheel on the right behind it looks like it might have the correct rim, originally it would have been a middleweight (26 x 1.75), but balloon tires (26 x 2.125) will also fit on the rim, although they might not clear the fenders.
This is the first time I've seen that chainguard on that particular frame, but they go together well.