This is a nice clean 4 volume complete set of Audels Carpenters and Builders guide books, published and printed by Theo. Audel & Co, New York, 4 volumes copyright in 1923, & 1939, reprinted in 1947 or 1948. Overall good++ condition, black semi-hard boards, very clean, gold gilt lettering on spines, no spine cracks, fraying, or stains nice flat covers, very little wear, no writing or scribbling. Page edges are tipped in red, (some slight red color variation from volume to volume, pages are clean, and white, no stains, tears, or missing pages. Cover are clean, with nice gold highlighting on the spines! Volumes 2 & 3 are in very good condition overall.  A nice set of books covering tools, steel square, cutting tools, saw sharpening, nails, screws, joinery, furniture, math, drawings, estimating, house and roof framing, layout, foundations, doors, windows, stair building, mill-work, painting, etc. Lots of good information. A must have set for your How to library collection. Each book is 5 inches x 6.75 inches and has over 250 pages in each volume.