By your second picture, the rear remote lever control should be just in front of the 3pt lever and behind the fel joystick in those two slots. There are two slots because you can have dual remotes with each having a control lever. You don't have a lever in either slot so there must not be any remote valves.
Your first picture has only your gear range selector and pto control lever.
If you follow the hydraulic lines from the fel to the tractor, where do they connect? If the lines use Quick Disconnects, you may have the hose kit which I had originally bought with my backhoe back in Fall of 2005. If you follow the lines from the QDs, which were just rubber hydraulic hoses with the hose kit, going under the tractor seat area, they should go about 18-20 inches to a valve that in mounted on the upper right side of the tractor case, just about even with the front of the right rear tire, and between the inside fender lip and tractor case. If you have that valve, unfortunately no turn handle. Mine only had a short 1/2 inch long shaft, about 3/8 inch diameter, with two flat sides that allowed me to get a 6 inch cresent wrench on it. That valve has to be turned from stop to stop meaning all the way clockwise or all the way counterclockwise to either power the backhoe or to allow the 3pt to work and not deadhead the hydro fluid. If you don't have that, somebody may have plumbed it in differently and if you can give the path of the hydraulic feed lines for the backhoe from the tractor, it can be figured if you can turn off the fluid to the backhoe with that set up.