> agrunt.jpg

Unknown source.

> alien_grunt_flying.jpg

Computer Gaming World - Issue 173 - December 1998

> assassin.jpg

Unknown source.

> baby.jpg

Unknown source.

> baby2.png

PC Zone - Issue 71 - XMAS 1998

> baby3.jpg

PC Fun - Issue 45 - January 1999

> beast.jpg

Computer Gaming World - Issue 159 - October 1997

> goty1.jpg

Computer Gaming World - Issue 175 - Febuary 1999

> great_outdoors.jpg

Unknown source.

> group.jpg

Computer Gaming World - Issue 173 - December 1998

> machiv.jpg

Computer Gaming World - Issue 167 - June 1998

> office_complex1+2.jpg

InterAction Magazine, Issue 35, Summer 1998
Scan office_complex1.jpg From: hl-inside.ru
http://web.archive.org/web/20181229231841/https://www.hl-inside.ru/magazines/interaction/InterAction_1998-Summer_35/

> run_shoot_run.jpg

Unknown source.

> PC Joker, November 1998

http://www.kultmags.com/mags.php?folder=UEMgSm9rZXIvMTk5OA== (issue PC Joker - 1998-11)

> Computer Gaming World. December 2000 (#197)

http://www.cgwmuseum.org/galleries/index.php?year=2000&pub=2&id=197

> GamePro, September 2000 (#144)

http://vgprintads.tumblr.com/post/86937236105/half-life-dreamcast-gamepro-september-2000

> Computer Gaming World, October 1997 (#159)

http://www.cgwmuseum.org/galleries/index.php?year=1997&pub=2&id=159