PLANNER
A language for writing theorem provers by Carl Hewitt <hewitt@ai.mit.edu> MIT 1967. Never fully implemented.
CONNIVER was an outgrowth of PLANNER and microPLANNER a subset. PLASMA is a PLANNER-like system modelled on Actors. See also POPLER, QLISP, Scheme.
["PLANNER: A Language for Proving Theorems in Robots", Carl Hewitt, Proc IJCAI-69, Wash DC, May 1969].