In 2001-2002, I took a year long artist’s book class at San Francisco Center for the Book. One of our assignments was to make a book that embodied a specific physical place. In rambling around her neighborhood, looking to see what place she wanted to use, one of the participants, 
Dina Tooley, found an old photo-enlarging machine sitting on the side of the street. Whenever I see cyanotype blue, I think of Dina’s excitement in experimenting with the machine & the book that resulted — it’s to the right.
So a flood of memories of that class came back to me recently when I saw this tutorial for printing on fabric using sunlight. The tutorial is from Christine Schmidt’s new book Print Workshop: Hand-Printing Techniques and Truly Original Projects. (You can look through the book on Amazon.)