Hmmm, whoever drew that does not know much about trains. The engine's road number would be in the numberboards not "express", no spikes or tieplates, no airhorn (although some modern practice is to put the horn back near the middle of the hood),
Oddly, the cartoonist must have seen a photo somewhere of a Union Pacific "veranda turbine", the front is very suggestive of one:
https://ogrforum.ogaugerr.com/fileSendAction/fcType/0/fcOid/57038617548943940/filePointer/57038617549201982/fodoid/57038617549201976/imageType/LARGE/inlineImage/true/veranda_02.jpg