Half-Life Easter Egg - Novel in Gordon's Locker

In the first level,where you enter the Anomalous Materials lab and put on the HEV suit, go to the locker room. Open Gordon's locker (it has the name Freeman on the front) and look closely at the books on the shelf. One is a novel by Marc Laidlaw, who wrote the plot for Half-Life. I think Laidlaw's last name is also on a locker, but I'm not sure.