Health Knowledge The Most Essential Thing in Life Vols. 1 & 2 (1928); covers contain major rubbing and shelf wear; corners are worn; hinges are loose and  somewhat worn; hinges of volume 1 are more worn and webbed than volume 2; binding is frail, with multiple pages loose and detached but present; Title page and copyright page missing from volume 1. Back strip on volume 1 is detaching