I expect that copyright protection on these would be pretty thin. Copyright doesn't exist on mechanically generated lists (e.g. the phone book) since they do not involve any creativity. Since the page explicitly says that that the fonts include the "charming" warts and all, and they only include the glyphs originally printed, one could make a good argument that their intent was mechanical translation to a digital format rather than a creative process. If you could demonstrate that the glyphs were essentially scanned in, for instance, that would bolster the argument.