Ron Friedman (one of the head writers for the first two seasons of Transformers Generation One and Transformers: The Movie) has placed several auctions on the website Heritage Auctions.com.  The auctions include the G1 series bible, character sheets (originals with the character in colour which reveal differences with characters like Arcee and Galvatron)  and a whole host more.

Here are the links to the auctions along with descriptions of each item

Auction #1

Season 1 Original Scripts for "Heavy Metal War" and "Plague of Insecticons".
Season 2 Original Scripts for, "City of Steel", "Changing Gears", "Traitor", "Attack of the Autobots", "The Immoblizer", "The Autobot Run", and "Atlantis Arise".

Auction #2

Photocopied scripts for the original "More Than Meets the Eye" mini-series as well as revised drafts of the first 6 episodes immediately following.

Auction #3

A ring binder that includes photocopies of the scripts for episodes #10-16.

Auction #4

A binder with photographs, designs, and model sheets. This includes several lists of characters that changed name between the design and the final  drafts.

Auction #5

Scripts for "Day of the Machines," "Enter the Nightbird," "A Prime Problem," "The Core," "The Insecticon Syndrome," "Dinosaur Island, Part 1 and 2, "The Master Builders," "Auto Beserk," and "Megatron's Master Plan Part 1."

Auction #6

A binder including images of prototype Ultra Magnus as well as scripts for "Fire in the Sky," "S.O.S. -- Dinobots," "Fire in the Mountain," "War of the Dinobots," "The Ultimate Doom Parts 1-3," "Countdown to Extinction," "Heavy Metal War," and "Plague of Insecticons".

Auction #7

More character design sheets, notes and bios, as well as audition dialogue for the Season 2 characters.

Auction #8

A 53-page revised story treatment for the 1985 feature film

Auction #9

Two sets of photocopied character guide pages compiled for the first season of Transformers, including thirty-eight 8" x 14" color guides, and another set of eighty-nine 8.5" x 11" black and white pages.

Auction #10

A set of four large black and white photocopies of Transformers characters including Wreck-Gar

Auction #11

Transformers: The Movie poster that hung in Ron Friedman's office

Auction #12

Photocopied scripts for "Transport to Oblivion", "Roll With It", and "Divide and Conquer" with hand-written changes, from writers Dick Robbins and Bryce Malek, Douglas Booth, and Don Glut, with revisions from Ron Friedman.

Auction #13

Photocopied scripts "Blaster Blues", "A Decepticon Raider in King Arthur's Court", "The God Gambit", "Make Tracks", and "Microbots."

Auction #14

A  binder that includes various Transformers Facts including Hasbro notes, toy photographs, a copy of Transformers#3 (guest starring Spider-Man), scripts for "Desertion of the Dino Bots, Parts 1 and 2," and "Megatron's Master Plan Part 2."

Auction #15

This is the final draft for Transformers: The Movie. It included a 179-page revised draft and 17 page character notes

Auction #16

Transformers: The Movie Revised Final Draft Script (Sunbow Productions, Inc., 1985).

Auction #17

Transformers: the Movie Script Group (Sunbow Productions, Inc., 1984-85). This was Ron Friedman's original unproduced first draft script dated November 12, 1984 (132 pages), plus two sets of revisions including the complete revised script dated February 13, 1983 (184 pages).

Auction #18

The G1 Series Bible.  This contains character design pages and information on all of the original character from the show.

Auction #19
Coloured character sheets for Arcee in robot and vehicle mode.

Auction #20
Coloured character sheets for Galvatron in robot and vehicle mode.

Auction #21
Hand coloured character sheets for Scourge in robot and vehicle mode.

Auction #22
Hand coloured character sheets for Cyclonus in both robot and vehicle mode.

Auction #23
Hand coloured character sheets for Blurr in robot and vehicle mode.

Auction #24
Hand coloured character sheets for Wheelie in robot and vehicle mode.

Our thanks go out to both Ron Friedman and Jared Egol, who reached out to the Transformers community on behalf of Ron.