BIG OL' KATIE. See
MY THREE SONS.
BIGHORN SHEEP. Troll Associates. 4 min., si., color, Super 8 mm. Loop film. © Troll Associates; 16Jan70; MP20674.
BIOCHEMISTRY OF ENZYME ACTION (Filmstrip) No. 1564. Popular Science Audio-Visuals. 42 fr., color, 35 mm. (A Biology release) With Filmstrip guide, 5 p. © Popular Science Audio-Visuals, Inc.; 1Sep69; A196086.
BIRD MIGRATION. Troll Associates. 4 min., si., color, Super 8 mm. Loop film. © Troll Associates; 16Jan70; MP20715.
BIRDS OF THE GALAPAGOS. Hartley Productions. 15 min., sd., color, 16 mm. Appl. author: Elda Hartley. © Hartley Productions, Inc.; 23Oct70; MP20982.
BISON. Troll Associates. 4 min., si., color, Super 8 mm. Loop film. © Troll Associates; 16Jan70; MP20678.
BLACK MEN AND IRON HORSES. New York Times Co. & Arno Press. 18 min., sd., color, 16 mm. A Rediscovery production. © New York Times Co.; 15Nov69; LP38060.
BLACK PARTICIPATION IN THE CIVIL WAR (Filmstrip) Silver Burdett Co. Made by Blackside. 56 fr., color, 35 mm. (Studies in the history of black Americans) With Teacher's guide, 19 p. © Blackside, Inc.; 17Jul70; A178324.
THE BLACK REVOLUTION (Filmstrip) Silver Burdett Co. Made by Blackside. 63 fr., color, 35 mm. (Studies in the history of black Americana) With Teacher's guide, 19 p. © Blackside, Inc.; 17Jul70; A178319.