From NASA, 1963, by William C. Strack, Wilbur F. Dobson, and Vearl N. Huff

  As described herein, this code is designed to operate on an IBM 704 computer that has an 8000 word (8 K) memory and at least 1 K of drum. 

Takes me back to when I lived and breathed such code for early geophysical and remote sensing work.