Cassandra Locke's previous chronological appearance was in issue #4, her next chronological appearance is in issue #3. Her log entry in this issue is 126-7-33.
Effigy is revealed to be "Deep Throat" in this story, the unnamed source that helped Bob Woodward and Carl Bernstein publically reveal the secrets of the Nixon Administration. In 2005 in the real world, it was revealed that former FBI Associate Director Mark Felt was Deep Throat. Bob Woodward began meeting with Deep Throat in June 1972.