USENET Logical Map
		June 1, 1981
		!-	Uucp links
		:	Berknet links
		@	Arpanet links

				  pdp
		    (Misc)	   ! (NC)	(Misc)
	   decvax sii  reed  phs--unc--grumpy  duke34  utzoo  cincy teklabs
	      ! !  !    !     !    !             !	 !	!      !
	      ! +--+----+-----+-+--+-------------+-------+------+      !
	      !                 !				       !
	      !               duke				       !
	      !                 !				       !
	      !          +------+---+-----------------------+--------+ !
	      !          !          !                       !        ! !
     ucbopt   !  hocsr--mhtsa----research   allegra       harpo-----chico
	:     !          !  !                  !
     ucbcory  !          ! eagle    ihnss   vax135  (Bell Labs)
  (UCB) :     !          !  !        !         !
     ucbvax--++----------+--+--+-----+--+------+--------+
	:    @                 !        !               ! (Silicon Valley)
     ucbarpa @      (UCSD) sdcsvax      !             menlo70--hao
	:    @     sdcattb-----+        !             !    !
     ucbonyx @                 +-----ucsfcgl        sytek sri-unix
	     @     phonlab-----+
         cca-unix           sdcarl