Alien

Conceiving the story

Early Development of the Alien Script

The Original Alien Script:

Ash the Robot

Creating the Movie

Nostromo 
 

Carlo Rambaldi's Alien monster concept 

Ridley Scott's Alien Monster

The Design of the Derelict

Early Designs for the Space Jockey

Unlocking the design of the Space Jockey

Into the Minds of the Production Crew

The Tomita Planets

Afterworlds

Dan O'Bannon's Mysteries:

Inspired by Erich Von Daniken?

Galactic Geography: 

H.R Giger's Egyptian Mysteries

Jean Delville's influence on Giger  

The Development of Necronom IV 

  
Space Jockey's origins in "Swiss Family Robinson"

Dissecting the Derelict : an essay by myself from the late 1990s

Resources
Interview and Commentary transcriptions
i Edited Ridley Scott commentary for the Alien 20th Anniversary DVD  
ii. Raw Ridley Scott Commentary for the Alien 20th Anniversary DVD 
iii. Edited Alien Laserdisc Don Shay interview with Ridley Scott
iv. Raw Alien Laserdisc Don Shay interview with Ridley Scott 
v. FollowTheNerd.com interviewed Brian Muir at Heroes...
vi. Online version of the early Alien script by Dan O'Bannon