Ah yes, you're right! I worked on this over the summer, so I must have gotten them a bit mixed up.
I copied the FONT info from each one into the NFNT portion of the resource fork in a newer file, then imported that file into FontForge for conversion to OS X-readable .dfont.
I guess NFNT already is a conversion of an original FONT, but my memory is getting vague. I think I know there also were FOND resources at one time, but Google doesn't help much there (to complicate matters, https://developer.apple.com/fonts/TrueType-Reference-Manual/... talks about 'fond' and 'sfnt' resources. There clearly has been quite a bit of evolution in font formats over time)