Das Gas in der Plakatkunst : Geschichte und Gestaltung / heausgegeben von der Ruhrgas AG, Essen in Zusammenarbeit mit dem Deutschen Plakat Museum ; [Konzeption und Texte, Frieder Mellinghoff.]
A practical treatise on gas-light exhibiting a summary description of the apparatus and machinery best calculated for illuminating streets, houses, and manufactories with carburetted hydrogen or coal-gas : with remarks on the utility, safety, and general nature of this new branch of civil economy by Fredrick [sic] Accum ... ; with seven colored plates
Facts and fallacies of Hawthorne : a historical study of the origins, procedures, and results of the Hawthorne illumination tests and their influence upon the Hawthorne studies / Charles D. Wrege
Lectures delivered at the centenary celebration of the first commercial gas company to sell gas as an illuminant, held at the Franklin Institute, Philadelphia, Pa., April 18th and 19th, 1912, edited and published by the American Gas Institute, New York City