What is a Lake Pigment?

I really like how Daniel V. Thompson describes the process of making a lake pigment. This book was first published in the 1956 but is a interesting read. It is available in digital format at the internet archives. It’s also possible you might find it in your local public/university library, so go look and check it out. (call number ND 1500.T5)

click on images to enlarge (and you might still need to zoom in)

http://www.worldcat.org/oclc/868969330