![Very Happy :D](./images/smilies/icon_e_biggrin.gif)
First is Pig Pen's plane, with which I am having a bit of a hard time identifying. The closest I have found would be the Grumman AgCat, but the tail doesn't quite match up.
Second is Franklin's plane which is a Fokker E.1, although the area just rearward of the cockpit is more rounded, the tail, wings, and engine nacelle are dead on.
I still can not find Lucy's plane but if I were to guess I would say check some of the more popular seaplane manufacturers of the time, exempli gratia: Grumman, Hughes, etc...