A few drawings from works of H. Kutter....

The previous picture came from Kutter's book from 1977. This is Linsenmaier's original from 1951:

Linsenmaier's colour version of 1951:

Kutter's version of 1968:

And Wilson's version (find the mistakes!):

For good reproductions of the last 3 pages, go to https://www.e-periodica.ch/digbib/volumes?UID=ihf-001 and see volume 6. 6a is also from H. Kutter.