Addenda The names of the following authors were omitted from the Journal of Research and Development, Volume 42, Number 3/4, May/July 1998. R. R. Horton and H. Ifill, "Design and fabrication of a prototype projection data monitor with high information content," p. 321. H.-S. P. Wong, "Silicon light-valve array chip for high-resolution reflective liquid crystal projection displays," p. 347.