Vintage thick pressed board slide specimen books. Each book features a double-door front cover with a pre-printed "Index" and "Property Of" template. Books open up to reveal twenty recessed slide compartments and two long cavities on the interior of each door for additional storage. Books measure 8"w x 13.5"h and are in generally good vintage condition, but with surface wear (some books have minor loose binding). Books sold individually and are shipped at random.