Thanks for the info. gentlemen. After using up two small oxygen cylinders (small torch) I took it to a machine shop who used a very large commercial torch & a portable hydraulic ram. One came out relatively easy. So after binding the ends of the wishbone axle so it wouldn't spread apart & TWO tries with the torch, the second spindle arm came free.
Now I have a better appreciation for the holding power of 73 yrs. of field dirt & rust!!!