These five books were quite popular when in print:
The Labyrinth Revival
Origin, Symbolism and Design of the Chartres Labyrinth
Constructing the Chartres Labyrinth
Constructing Classical Labyrinths
Needing updating and better distribution, they slowly went out of print. Providing them was mostly a public service, as printing, filling orders, and keeping track of Amazon.com was time consuming for very little ultimate profit. My assistant Judy Hopen used to fill the orders, but she is no longer with us. I plan to revive these titles and make them available here, as well as electronically. The first one is now finished and available at Amazon.com: Church Labyrinths. The others will be following soon.