Books about Mental Training

Extended texts regarding imagination and mental training

"Mindfulness in plain English"
Online Text: http://www.urbandharma.org/udharma4/mpe.html

"Memory: How to Develop, Train and Use it"
Text: http://www.gutenberg.org/ebooks/41478
Audio: https://librivox.org/memory-how-to-develop-train-and-use-it-by-william-walker-atkinson/

"The Power of Concentration"
Text: http://www.gutenberg.org/ebooks/1570
Audio: https://librivox.org/the-power-of-concentration-by-theron-q-dumont/

"Essay on the Creative Imagination"
Text: http://www.gutenberg.org/ebooks/26430
Audio: https://librivox.org/essay-on-the-creative-imagination-by-theodule-ribot/