Collin was a legend in New Orleans and throughout the Gulf Coast and was the city's first restaurant critic. This write up is By Judy Walker, The Times-Picayune:

Collin was the author of “The New Orleans Underground Gourmet
He and wife Rima Collin wrote “The New Orleans Cookbook
Mr. Collin also was emeritus professor of history at the University of New Orleans and a Theodore Roosevelt scholar.
“The New Orleans Underground Gourmet” was the first guide in book form to New Orleans restaurants “and it sold like hotcakes,” said Gene Bourg, former restaurant critic at the Times-Picayune. “Everybody was talking about it.”
New Orleans States-Item editor Charles A. Ferguson said his wife had seen the Underground guide and suggested hiring Mr. Collin to write a column about restaurants.