Images originally available at http://blizzard.com/star/star.htm
Images originally available at http://www.blizzard.com/star/star.htm and http://www.blizzard.com/star/archives.htm
Images originally available at http://www.blizzard.com/starcraft/
Images originally published with the preview of the game on 16 May, 1997 at http://www.cdmag.com/strategy_vault/starcraft_preview_2/article.html
Images originally available at: http://www.pcgamer.com/p_star.html (page archived by the Wayback Machine). The exact date of publication of the preview is not indicated, but the Wayback Machine snapshot was made on 22 October 1996.
These images have been retrieved from a fan site (Wayback Machine copy), according to which they had been first published by Blizzard on 18 March 1997. Tentative captions in brackets are based on the April 1997 Wayback Machine snapshot of the Blizzard Entertainment website which does not, however, have any preserved screenshots.
Screenshots published with a preview of the game by the Online Gaming Review (OGR) magazine on 10 September 1996: http://www.ogr.com/previews/starcraft.shtml (page archived by the Wayback Machine). The images are identical to those found at Blizzard's website but in higher quality (no JPEG compression).
Screenshots published with a preview of the game by the Next Generation Online magazine on 22 May 1996: http://www.next-generation.com/previews2/pc/starcraft2.chtml (page archived by the Wayback Machine).
Images originally available at: http://www.blizzard.com/star/star.htm, http://www.blizzard.com/star/terran.htm and http://www.blizzard.com/star/protoss.htm (pages archived by the Wayback Machine). The images were retrieved from third party websites. Captions and original file names are from the Blizzard Entertainment website.
Screenshots originally available at: http://www.blizzard.com/star/star.htm (page archived by the Wayback Machine). These images had been shown at E3 1997, as their file names suggest.
Images originally included with a preview slide show of the game published by Blizzard.
Image published with a E3 '97 feature at: http://www.cdmag.com:80/articles/002/130/e3_strategy_part1.html (page archived by the Wayback Machine).
Pre-release screenshots bearing the logo of the online gaming magazine Gamesmania, preserved through fan sites. Original publication date unknown but the game is fairly close to the final version making late 1997 or early 1998 a likely date of publication.