London: Phaidon Press, 1968. Hardcover. Quarto. 148pp. Profusely illustrated; 68 color plates, 143 b&w plates and 123 line drawings. Rust linen boards with pictorial price-clipped dust jacket. Bookplate. "In this book Georg Gester tells how he found Christianity alive in the rock, in churches hidden below rock ledges.....

Milan: Five Continents, 2009. Hardcover. Sq. quarto. 240pp. Illustrated from color photographs by Johnathan Watts. Still in original shrinkwrap.