Abstract: A card blank for identification cards and the like that include a microfilm with predetermined information to be read by a common utensil such as a magnifying glass or a microscope. The card includes two sheets that joined together at predetermined areas and include each a window with similar dimensions and in alignment. The microfilm is positioned between the two sheets exposing most of its area with information. The edges of the microfilm are sandwiched by the two sheets defining a peripheral wall around the windows. One of the embodiments contemplates the use of a slot in one of the sheets with a peripheral pocket surrounding the windows. This allows the ready insertion of the microfilm. Another embodiment includes a flexible second sheet that folds back permitting a user to bring one straight edge of the microfilm in abutting contact with an interface line thereby readily positioning the microfilm so that a substantial portion of its information is exposed.

Abstract: A prefabricated building construction composed of a plurality of columns and beams adapted to be interconnected to one another to form a rigid load-bearing structural frame and a plurality of inexpensive lightweight non-load-bearing panels spanning the frame components, and each panel being generally of slab form and having a top, bottom and side faces bounding an inside and outside main generally planar face, and said panels comprising a main portion of molded waste material and a resinous binder forming a polymer and the minor portion of open cell material in spaced parallel cylindrical shafts embedded within the main portion of molded waste material with the shafts extending from the top surface to the bottom surface and one of said shafts being adjacent each of the side surfaces, said frame components being substantially concealed within the panels defining waterproof seams wherein the frame components serve as waterproof panel connectors, each frame component along one of the seams comprising a portion e