I found my great-grandfather on both the 1920 and 1930 census (he died in 1933). On both he is listed as "PA" for citizenship, which means that a declaration of intent for naturalization was filed. This includes a photograph.
I can't seem to find it anywhere on ancestry.com (where I found other relatives' papers). I may not be doing something right. We know him as Charles Holovacko, but on various forms he is listed as Vasily Holovcsak (1907 passenger record, ship: Fiume), Charles Holovaka (1920 census, Vermont), and Charles Holovaesko (1930 census, New Jersey).
He's listed as PA by 1920, but I don't know if I should be looking for Vasil, Vasily or Charles, or any of the myriad permutations of the surname that seem to have cropped up in various records. Soundex searches seem to be of no help.
How should I be doing this?