stockvideo’s en b-roll-footage met clayton f. rubensaal and earl h. sorg, research chemists who originated and developed the idea, in laboratory; man mixes resin in shallow box, as... - sorg00:26
stockvideo’s en b-roll-footage met "middletown, n.y. - dedicate ymca physical facility building" superimposed over middletown dignitaries posing on steps of new ymca building /... - sorg00:57