Try looping this mp3 and mixing it with your track modified as per Whomper’s instructions
BTW the mp3 wa made using this … http://www.freesound.org/samplesViewSingle.php?id=12743
NB: 1920’s recordings were 78rpm, the Freesound sample is probably 33&1/3 or 45rpm.
so if you want historical accuracy you’ll have to find a recording of a 78, try here.