Letters to the Editor
Abstract
(1) Author's comments about his paper Salveson, M. E. 1956. A problem in optimal machine loading. Management Sci.2 (3) 232–260. (2) Comments about Jackson, J. R. 1956. A computing procedure for a line balancing problem. Management Sci.2 (3) 261–271 by W. B. Helgeson and T. T. Kwo, General Electric Co., Louisville, Kentucky.

