I was able to make some calls today, looking for a tow bar to rent or buy. The best I could find locally was a $130 setup that I would have to drill holes into the 68's bumper to attach. Racecar Man found a $90 set-up that I could have shipped to the house in a week.
But the final answer may be a truck and trailer. I found a place that rents car trailers for $35 a day. That is cheaper than any of the front wheel car dollys that I priced for rent. I will have to rent a truck to pull the 18' trailer, but it will still be cheaper than buying a tow bar for one time use.
So Monday or Wednesday I may be heading out to the farm to pick up my pickup. Yipeee!