Abstract: A notebook construction in which multiple blank pages of a small notebook are provided by folded sheets of paper eight times the nominal dimensions of the notebook pages. Selective unfolding of the folded pages provides larger pages for use where desired. Sheets of paper having an area eight times the area of the folded pages are stacked and sewn together along one-half of a center fold. The other half of the center fold is cut so that each half of the sheet may be folded twice to the completely folded page size, and the sheets are of different colors so that the two halves of a particular sheet may be selected and used. The stitching utilizes threads of different colors, and the threads extend beyond the stitching by a distance sufficient for the threads to act as a built-in bookmark. The stiffer cover of the notebook has rows of perforations spaced inwardly from its edges to facilitate removal of edge portions so that the cover can fit into a pocket or pockets in a protective and/or decorative outer cover.

Abstract: Constructing building walls from concrete blocks having flattened rectangular facing members held in parallel spaced relation by integral transverse webs spaced from the ends of the block by a distance equal to one-half the distance between the webs and providing a pair of V-shaped reinforcing of receiving notches having straight sides inclined at an angle of substantially 45.degree.. The blocks are stacked in equally staggered courses to define the wall panel and are held in position by a bonding agent securing the confronting surfaces of the blocks to each other with substantially no space therebetween. Vertical reinforcing rods are positioned in the vertically extending openings provided by the aligned webs of the blocks, and horizontal reinforcing rods are supported in the V-shaped notches, with the shape of the notches causing the rods to settle into desired positions on opposite sides of the vertical reinforcing rods.