Jeep Hardtop

I am trying to remove the "Bonanza" hardtop from my 61 CJ.
The previous owner bought the jeep in 1963 and went to VA. to have the hardtop (new) mounted on his jeep and it has been on ever since.
I have the top part off and the side part lose but there are 4 philips head screws going from inside to outside (hidden on the outside). I think there is a blind catch of some kind.
Looking for suggestions.
Thanks
John

 

I got one side off. The 4 bolts/screws went in above an inside lip.
The second two I tried came right out, the first two were sheet metal screws that I had to keep constant presure on to get them to back out.

 

So, you gonna sell that hard top once it's off????

 

Have thought about it but have not made up my mind, it's the best one i've seen.
It is complete, all the glass is good, windows crank up and down and it has the steel roof rack.