Here’s the color code chart from the 1941 Radio Today yearbook: Ads in that magazine promoting resistors were careful to note that they were RMA color-coded.

Resistor Color Codes, Chart, Resistance Calculator Why resistor color codes? Circular banded components are visible from all directions and angles while ...

Some people look at a venerable resource like resistor color code charts and see something tried and true, but to [Andrew Jeddeloh], there’s room for improvement. A search for a more intuitive ...