The legs will be glued on the long grain to the long grain of the case sides. They will also be constrained by numerous stub tenons of various shapes and sizes. I had difficulty keeping track of the joinery orientation when the case switched to face down to on its side to face up. A few patches and fresh paring was required as I went along.
I worked on one leg at a time. Each “mortise” was marked, chopped and test fitted, then the next mortise was marked with the initial one partially in place. I did not trust the case to be perfectly symmetrical or square so I did not batch out my markings. For simpler builds I often mark one leg, then mark the others from those marks. Not this time.
Not sure why I decided to use the long stub dovetails for the outer back boards. There are many good reasons not to and probably not a much structural advantage to this approach. But when simple can do the job, why should I stop at simple?
With the front legs in place I trimmed the doors to just fit the opening. After legs are glued in place, I will fit the doors properly, or my version of proper. The extended center door stiles will be shaped once I see how the leg shaping turns out.