There have been various versions of these plots floating around even before the internet.
Reactance charts had been around a long time when this was published.
From Proceedings of the IRE ( Volume: 38, Issue: 12, December 1950):
Abstract:
The time-honored chart of reactance, frequency, inductance, and capacitance is extended in range, with added scales of susceptance, wavelength, and time constant. Simple geometric patterns are given which enable the chart to be used for the direct solution of various problems such as the bandwidth of a resonant circuit, some properties of a transmission line (wave impedance and delay), and half sections of the usual kinds of constant-k filters (low-pass, high-pass, band-pass).I remember buying K&E Reactance graph paper at the university book store in the 1960s. I'm pretty sure I still have a few sheets. They are probably stored with my supply of carbon paper.