In the very first post on this blog, I wrote about how lucky I am to be a 21st century painter because I could walk into an art store and buy a tube of Lapis watercolor paint. No need to dig it up. No need to grind it myself. No need to fret about consistency from batch to batch. No worries about preserving it.
John G. Rand: Innovator
In May 2013, Smithsonian Magazine had a short but very informative article about the introduction of tubes for paint by "a little-known" American portrait painter, John G. Rand. Should you be hungry for more information about this innovator, look no further than a helpful article from the North Carolina Museum of Art: A revolution in paint.Philip Ball's "Bright Earth"

When making art, we stand (or sit) on the shoulders of innovators. Thanks to all of them.
Read this: Never Underestimate the Power of a Paint Tube (Smithsonian)