A native of Berkeley, California, he moved with his family at an early age to Shreveport, where in 1988, he graduated from Methodist-affiliated Centenary College. He wrote sixteen books and more than five hundred articles on the history of Shreveport and northwestern Louisiana. He penned columns entitled "The Presence of the Past" for the former Shreveport Journal newspaper. He wrote the column "A Look Back" for the Forum News in Shreveport. In his later years, he began to focus on the history of ancient Rome and donated his extensive collection of Shreveport images and memorabilia to the archives at Louisiana State University in Shreveport, hence having made his work available to the public in perpetuity.
Brock died in Shreveport of a heart attack and a stroke at the age of forty-five. He was survived by his wife of six years, the former Shannon Glasheen, and his mother, Victoria Berg Brock, both of Shreveport; his father, Robert Donald Brock of El Cajon, California, and his paternal grandmother, Frances Smith Brock of Poway, California. He is interred at Oakland Cemetery in Shreveport, where he had conducted much research over the years. Gary Dillard Joiner of LSU-Shreveport, offered this tribute to his friend and colleague:
The passing of Eric Brock represents a loss not just to his family and to the community but to the larger world and the body of knowledge of Louisiana history. Many academic scholars cannot match the volume of work and information that Eric was able to produce, relating information about the people, places and things that define who we are and where we have been. He was wise beyond his years. He had the innate capacity to link things and people and places that most of us might overlook. He was a superb researcher, an excellent writer, and a wonderful chronicler."
John Andrew Prime of the Shreveport Times described Brock, accordingly, "witty and urbane, a meticulous researcher and a bon vivant, he was a frequent contributor to area newspapers and magazines and also collected a vast amount of material, much of it primary, on Shreveport, Caddo Parish and the surrounding area, particularly the period from the Civil War to around World War I."
- Shreveport, LA, 1998
- Red River Steamboats, with Gary Joiner, 1999
- New Orleans, 1999
- New Orleans Cemeteries, 1999
- Centenary College of Louisiana, 2000
- Eric Brock's Shreveport, 2001
- Jewish Community of Shreveport, 2003
- Shreveport in Vintage Postcards, 2005
- Natchitoches Parish, 2007
- Shreveport Chronicles: Profiles of Louisiana's Port City, 2009
He also wrote the introduction to several books published by Sarah Hudson-Pierce's Ritz Publications in Shreveport.
- Eric John Brock. Shreveport Times. Retrieved on May 18, 2012.
- Eric John Brock. findagrave.com. Retrieved on May 18, 2012.
- Shreveport, LA. amazon.com. Retrieved on May 18, 2012.
- Red River Steamboats. books.google.com. Retrieved on May 18, 2012.
- New Orleans. paperbackswap.com. Retrieved on May 18, 2012.
- New Orleans Cemeteries. Retrieved on May 18, 2012.
- Centenary College of Louisiana. paperbackswap.com. Retrieved on May 18, 2012.
- Eric Brock's Shreveport. amazon.com. Retrieved on May 18, 2012.
- Jewish Community of Shreveport. paperbackswap.com. Retrieved on May 18, 2012.
- Shreveport in Vintage Postcards. paperbackswap.com. Retrieved on May 18, 2012.
- Natchitoches Parish. paperbackswap.com. Retrieved on May 18, 2012.
- Shreveport Chronicles. fishpond.com. Retrieved on May 18, 2012.