Volume's 1-5 of "The Modern Plumber and Sanitary Engineer" Published by Gresham Publishing Co. LTD.,  London and done under The Editorship of G. Lister Sutcliffe. All books are in usable condition with all pages with maybe the title page for Volume 1 which maybe missing if it ever had one. The binding on 1 and 4 are loose but only moderately not so that pages are falling out. They are 10" X 7" and all the covers are in good condition. Not sure of the date as there is no copyright date. My guess is early 20's.