Cloth, dj, VG+/VG. 183pp, b/w frontis, 5 b/w plates, index, 'with the authors compliments' to the endpaper dated 1941 ( presumably Kenneth Swan ), photograph of Kenneth Swan & HM King George VI looking at a Science Museum display about Joseph Swan along with an ALS from Kenneth Sawn laid in, dustjacket a little worn along the edges with slight loss to the head of the darkened spine, slight age toning to the pages. The life of Sir Joseph Wilson Swan FRS [ 1828 - 1914 ] English physicist, chemist, and inventor, best known as an independent early developer of a successful incandescent light bulb. The book was written by two of Swan's eight children - Mary from his first marriage & Kenneth from his second. 475 grams.