There aren't a ton of photos of Ivan at the Curtiss School, but here are a couple of the better ones. Once again, I'm afraid there isn't much to add to these photos, textually. You may (if I did this correctly) see a difference in the display mode for photos. It should take you to the Smugmug gallery, where you'll be able to view the photos in a full screen slideshow.
And finally, here is a scan of the logbook entry for the first portion of Ivan's instruction at the Curtiss School. He transcribed this from his original books toward the end of his flying career. Unfortunately the original is lost.
Next up will be some photos of the Curtiss Twin JN.