The text does refer to Figure 1 several times.
Here what the next reference tells:
The drawing in Fig. 1 (also Fig.4 below) reflects only one side of the reality. This is a split view projection of
the abstract “reality”. Magnetic field lines are always closed and the induced current (charge!) must be of 1,
3 or 5 rotation symmetry to be able to couple with magnetic flux.
Wittenbach wrote his article and presented it to us in such a way that he was the first physicist to come up with a toroidal model of an electron and a proton ...
I know that historians are allowed to talk about anything the way the like it. SO(4) physics first called NPP2.0 is a project and the first version like NPP 2.01 are full of references to old unsuccessful models!