Who had more pseudonyms, Robert Ludlum or Clement Greenberg?
Clement Greenberg Clement Greenberg ( ), occasionally writing under the pseudonym K. Hardesh (January 16, 1909 – May 7, 1994), was an American essayist known mainly as an influential visual art critic closely associated with American Modern art of the mid-20th century. In particular, he is best remembered for his promotion of the abstract expressionist movement and was among the first published critics to praise the work of painter Jackson Pollock.
Rog Phillips Roger Phillips Graham (1909-1966), born in Spokane, Washington, was an American science fiction writer who was published most often using the name Rog Phillips, but also used other names. Of his other pseudonyms, only Craig Browning is notable in the genre. He is associated most with "Amazing Stories" and is known best for short fiction. He was nominated for the Hugo Award for Best Novelette during 1959.