The report describes and discusses the activities and programs of the Sensory Aids Evaluation and Development Center (Massachusetts Institute of Technology, Cambridge, Mass.) in the period between January 1, 1969 and February 28, 1970. It is written for an audience concerned with technological developments and approaches in sensory aids for the blind. The work areas and tasks of major concern during the period covered were braille codes, brailling devices, automated braille, mobility and orientation devices, and communication devices for the deaf-blind. Specifically, the following projects and devices are reviewed: MIT-BRAILLEMBOSS, folding cane, pathsounder, pocket communicator, sound source ball, DOTSYS II, linear tape measuring device, electrified Perkins brailler, computer generated mathematical table, and braille computer codes. The report also summarizes the seminars, presentations, conferences, publications, and other special activities of the Center conducted for the purpose of information dissemination. Appended are evaluations of the MIT automatic brailler and the crook handle folding cane, and a copy of the electrified Perkins evaluation data package. (KW)