I'm not an antique camera specialist, but I have to agree with smieglitz. Yours looks similar to the 5x7 Watson Portrait Camera at the top of (PDF) page 17 in the 1942 catalog, part 2 of 2. But it looks identical to the same model at the top of (PDF) page 29 in the 1938 catalog, part 2 of 2.
Specifically, the metal reinforcing bar across the top of the front standard and the 5-screw flat metal baseplate at the bottom (where your image #5 shows the Burke & James stamp) are both shown in the 1938 model, but not shown in 1942.
And looking at the 1938 version, is that your lens I see listed as a LUXOR 7½ in. F:7.5 for the princely sum of $23.50? (Listed under RECOMMENDED LENSES... in the right-hand column. Not the 7¼ inch listed on the left for the same price. A catalog misprint, perhaps?)