There's another guide [0] for wire wrap technique (solderless, cold welded connections to square posts [1]). Used extensively in telephony switching/patching in the past, as well as digital circuit construction like computers. Quite nice for prototyping, although qualitative sockets/posts can be hard to acquire at a reasonable price nowadays.

[0] https://workmanship.nasa.gov/lib/insp/2%20books/links/sectio... [1] https://en.wikipedia.org/wiki/Wire_wrap