Book, titled, "Installation of Rail Bonds by Electric and Copper Welding". Consisting of a 36 page book, printed with many photographs, two tones (black and grey) printed in grey and black ink illustrating the equipment that was made by The Electric Railway Improvement Co. of Cleveland Ohio, USA. Covers in addition to the 36 pages, are on the outside, marbled paper, bluish grey, with embossed dark blue titles and company logo (ERICO), with light blue bands and a photograph of a rail based welding machine on the front cover. Stapled with three staples. On page 2, has been over stamped in purple ink, the name and address of the Australasian representative, "Charles Wright". Date of printing not given in document, estimated to be c1920. See also item Reg. No. 1639, for notes on bonding costs and return circuits.trams, tramways, trackwork, rail bonding, erico, welding