I just had a quick look at Robert G. Wilson v's much-referenced 'American English names for the numbers from 0 to 100999 without spaces or hyphens.' https://oeis.org/A001477/a001477.txt This contains, I think, 10000 errors; specifically for the numbers 84000-87999 and 94000-999999, by introducing an extraneous 't' at letter-position 7.