atmcashpoint, Some early screenshots of Space Quest 3 and Zak McKracken, from Game Player's Guide to MS-DOS Computer Games, vol. 1, no. 2 (circa December 1988).
A really excellent look at Roger Wilco's blond sprite and the junkyard dog here.
Also check out Zak McKracken's blue shirt! #spacequest #zakmckracken #sierra #lucasarts #adventuregames
An early screenshot of Space Quest 3, from Game Player's Guide to MS-DOS Computer Games, vol. 1, no. 2. It shows the closeup of Roger sleeping in the cryo pod from the intro. The toolbar at the top of the screen shows information from Sierra's image editor, and a crosshair cursor for drawing pixel art is visible above Roger's head.
An early screenshot of the low-res version of Zak McKracken and the Alien Mindbenders, from Game Player's Guide to MS-DOS Computer Games, vol. 1, no. 2. It shows Zak being imprisoned inside the Mindbender machine by a Caponian. Zak's shirt is a light blue color (though not teal), instead of the green used in the final version of the low-res release.