The following files came from the from the snobol directory of the ftp.cs.arizona.edu anonymous ftp server (no longer reachable): gb.pdf Scanned copy of the "Green Book": The SNOBOL4 Programming Language Griswold, Poage, and Polonsky Prentice-Hall, 1971, ISBN 13-815373-6 3,553,953 bytes. v311.sil Version 3.11 source for the SIL (Macro Implementation of SNOBOL4. 245,374 bytes. macros.360 SIL macros for the original IBM 360 implementation. 56,763 bytes. subrs.360 SIL substroutines for the original IBM 360 implementation. 59,318 bytes. syntax.tbl Syntax tables for Version 3.11. 3,551 bytes. The subdirectory images contains images related to SNOBOL.