The quick take is that my Harbor Freight shop crane might have done the job but I couldn't get it level enough on the dirt and keep it from sinking in. My neighbor unloaded it with his Bobcat.
I did confirm that a 2T Harbor Freight shop crane can lift a Bridgeport with the head off.
I did confirm that you can move a BP through a 36" cellar door by cranking the table all the way to one end - get that side through, then crank the end that's outside into the inside and walk the rest of the machine through.
I'd like to submit the sequence of photos to the drop box. It would be easiest for downloaders if I could submit this as a pdf file with pictures and captions embedded in the document. I didn't spot any pdf files there. Can the drop box accept pdf files?