Where can I find sources of information on the many alterations made to the Original Trilogy films over the years?

‘Complete Comparison of Special Edition Visual Changes’ - OT•com thread by doubleofive - with many sources of information…

 
‘Star Wars Visual Comparisons’ - website by doubleofive

‘Star Wars Special Edition Visual Comparisons’ - twitter page by doubleofive

‘Disney+ Should Offer the Star Wars Original Cuts’ article on the Wired website by doubleofive : #ReleaseTheOriginalTrilogy : #ReleaseTheOriginalTrilogy : OT.com thread on doubleofive’s article : ‘What We Want And How To Make It’ - a sequel article.
 

'A Visual Guide to Changes, Fixes & Tweaks in the 2019 SE Version - article by doubleofive on The Digital Bits : SW : ESB : ROTJ

‘Star Wars Special Edition Visual Comparisons’ - blog by doubleofive; with 2011 SE Changes image gallery here : SW : ESB : ROTJ

StarWars•com Official 2004 Changes Preservation : SW : ESB : ROTJ - compiled by doubleofive

StarWars•com Official 1997 Changes Articles : SW: SE : ESB: SE : ROTJ: SE - via the Internet Archive’s WayBack Machine website
 

A helpful overview of the changes to the OT - and surrounding issues - from zombie84’s SaveStarWars•com’s FAQ Page

‘Special Edition Changes’ - 2010 article on the changes made for the 2004 DVD release - from zombie84’s SaveStarWars•com

‘Shot List Spreadsheet - v0.6.05 - 6 films - Multiple SW Audio Mix Changes Added’ - OT•com thread, by none.

‘Star Wars Changes’ (Original Trilogy) - YouTube Videos by 13las : SW : ESB : ROTJ : Disney+ : The Prequels

‘All Changes Made To Star Wars’ (Original Trilogy) - YouTube Videos by Marcelo Zuniga : SW - Part 1 : SW - Part 2 : ESB : ROTJ

DVDActive•com’s ‘Star Wars - The Changes’ articles (via the Internet Acrhive’s WayBack Machine) - SW : ESB : ROTJ : The Prequels

‘The Big List of Changes to the SW films’ OT•com thread on the FromScriptToDVD site’s comparison articles - by Gregatron

‘Who Shot First? The Complete List Of Star Wars Changes’ - an Empire film magazine article

Wookieepedia’s ‘List of changes in Star Wars re-releases’ page (OOT, 1997SE, 2004SE, 2006 GOUT, 2011SE, 2019SE, 3D, PT)

‘List of changes in Star Wars re-releases’ - from the IPFS•io website

Star Wars Comparison’s YouTube video channel for comparing theatrical cuts to official blu ray and various fan projects.

and also reading through these superb OT•com threads (by doubleofive):-

as well as these Index Threads - which link to many topics of discussion here on the OT•com regarding the changes made to the Original Trilogy films:-

These ‘info threads’ featuring articles and discussion threads on the Original Trilogy may also be of interest…