The ToolTalk Service: An Inter-Operability Solution, published by SunSoft Press and PTR Prentice Hall, Englewood Cliffs, NJ 07632, ISBN 0-13-088717-X
ToolTalk and Open Protocols: Inter-Application Communication, by Astrid Julienne and Brian Holtz, published by SunSoft Press and PTR Prentice Hall, Englewood Cliffs, NJ 07632, ISBN 013-031055-7
The Solaris 7 Software Developer AnswerBook set contains:
ToolTalk Reference Manual
ToolTalk User's Guide