More Mackal
Mike,
Certainly can provide more data on this person.
Mackal = Dr. Roy Mackal (of the University of Chicago), biochemist/virologist, PhD 1953
Here's his biography, which is fairly complete, including a publication listing of his journal articles as well (99% non-cryptozoological):
http://www.chemeurope.com/en/encyclopedia/Roy_Mackal.html
Here's a relevant excerpt about his efforts in the Congo region:
"....
During the 1980s, Mackal turned his attention to another legendary creature, the Mokele-mbembe, an alleged living dinosaur in the Likouala swamp region of the Republic of Congo. Accompanied by University of Arizona ecologist Richard Greenwell and Congolese biologist Marcellin Agnagna, Mackal undertook two expeditions, the first in 1980 and the second in 1981, to find and photograph the creature. Mackal himself did not actually see the creature, but he and his colleagues did collect multiple firsthand reports from Congo natives, who, according to Mackal, consistently described a creature similar to a long-necked sauropod. During his interviews with the natives, Mackal also heard anecdotes about the Emela-ntouka, another possible living dinosaur which supposedly resembles a Monoclonius or Centrosaurus, the Mbielu-Mbielu-Mbielu that resembles a Kentrosaurus, and the snake- or lizardlike Nguma-monene.
In 1987, Mackal wrote a book about his adventures in the Likouala swamps called A Living Dinosaur? In Search of Mokele-Mbembe. He had tried to obtain funds for a third expedition to the region, but his plans were never realized, and the mystery of the Congolese “living dinosaurs” remains unsolved.
..."
I read the book a good while back. If my dim memory serves, he included some photography of actual foot tracks that he tentatively identified as the alleged Mokele Mbembe. There are also artists' renditions of some of the other creatures in the volume as well. Overall, I found the book quite fascinating and interesting.