"This book was published to coincide with the exhibition held at The Royal Exchange, from 18 July to 12 August 1978, under the auspices of the Festival of the City of London, and sponsored by Thorn Lighting in conjunction with The Times and Sunday Times."

"The research from the Clarke's two Churchill Trust Fellowships led to the Arts Council of Great Britain-funded exhibition of stained glass GLASS/LIGHT, co-curated by Clarke, British war artist John Piper and art historian Martin Harrison, with the collaboration of Marc Chagall, and produced the book Architectural Stained Glass. GLASS/LIGHT, part of the Festival of the City of London, was the most extensive exhibition of stained glass of the 20th century."

With a foreword by John Piper, texts and photographs by Martin Harrison, and an essay by Brian Clarke. The exhibition GLASS/LIGHT, and the catalogue, included Harry Clarke's The Eve of St Agnes; Edward Burne-Jones' first-ever design for stained glass, Christ as Good Shepherd; and works by Charles Rennie Mackintosh, Frank Lloyd Wright, Jean Cocteau, Fernand Leger, Le Corbusier, Theo van Doesburg, Marc Chagall and Brian Clarke. The exhibition also introduced to England the works of the West German school of stained glass, with panels by Johan Thorn Prikker, Georg Meistermann, Ludwig Schaffrath, Johannes Schreiter, and Jochem Poensgen.