Some early books did not have stock numbers, or ISBN numbers. Initially, Leading Edge tried alphanumeric stock numbers, but finally switched to purely numeric. There are 4 editions of the Phoenix Command core rules, stock number 10200. There are also some overlapping and unclear stock numbers in the 10200-10202 range. After that, the stock numbers settle down.

LEG Stock Number	Edition	System	Description
None	1st ed	Sword's Path Glory	The Red Book that started it all.
None	2nd ed	Sword's Path Glory	Book 1: Combat. White spiral bound.
None	2nd ed	Sword's Path Glory	Book 2: Role-Playing. White spiral bound.
None	1st ed	Small Arms Spectrum	White spiral bound.
HH-S1	1st ed	Small Arms Spectrum	Hand-To-Hand. Grey softcover
R-FRPG-1	1st ed	Rhand: Morningstar Missions	White spiral bound.
10200	1st ed	Phoenix Command	White Boxed Set. The box is marked 10200 and the book inside is marked 10201.
10200	2nd ed	Phoenix Command	Black Boxed Set. Uses Master Phase Count timing rules.
10200	3rd ed	Phoenix Command	Black softcover ISBN 0-945571-20-8 Uses New Impulse system.
10200	4th ed	Phoenix Command	Black softcover, ISBN 0-945571-20-8 (yep, same as 3rd ed. but with revised weapon data and new cover clearly stating its 4th ed).
10201	1st ed	Phoenix Command	High-Tech Weapon Data Supplement black softcover ISBN 0-945571-21-0
10201	2nd ed	Phoenix Command/Living Steel	High-Tech Weapon Data Supplement, black softcover ISBN 0-945571-21-6 contains new weapons like Scatterpack Handguns and Backpack-fed Flechette guns, Nelbar, Porto-cannon, Scythe, Serpent, and Hydra.
10202	1st ed	Phoenix Command	Weapon Data Supplement Modern Military Small Arms, grey softcover.
10202 (?)	2nd ed	Phoenix Command	Modern Military Small Arms Weapon Data Supplement, black softcover included in 2nd ed box set.
10202	1st ed	Phoenix Command	Civilian & Police Weapon Data Supplement, black softcover ISBN 0-945571-22-0
10202	2nd ed	Phoenix Command	Civilian Weapon Data Supplement black softcover, ISBN 0-945571-22-4
10203	1st ed	Phoenix Command	Advanced Rules: Small Arms Combat grey softcover
10203	2nd ed	Phoenix Command	Advanced Rules for Small Arms Combat, black softcover, ISBN 0-945571-23-2
10204		Phoenix Command	Hand-to-Hand Combat System black softcover, ISBN 0-945571-24-0 ( is this 1st ed?!?)
10205	1st ed	Phoenix Command	Damage Tables: Small Arms grey softcover with large painting on front, 2 solders in crosshairs against backdrop in flames.
10205	2nd ed	Phoenix Command	Advanced Damage Tables for Small Arms, black softcover, ISBN 0-945571-25-9
10206	1st ed	Phoenix Command	World War II Weapon Data Supplement black softcover ISBN 0-945571-26-0
10207	1st ed	Phoenix Command	Wild West Weapon Data Supplement black softcover, ISBN 0-945571-27-5
10208	1st ed	Phoenix Command	Special Weapons Weapon Data Supplement black softcover, ISBN 0-945571-28-3
10209	1st ed	Phoenix Command	Expansion, black softcover, ISBN 0-945571-29-1
10281	1st ed	Phoenix Command	Russian Roulette scenarios black softcover, ISBN 0-945571-81-9
10282	1st ed	Phoenix Command	In The Name of God scenarios. I don't have this, so I don't have an ISBN.
10283	1st ed	Phoenix Command	Lock and Load Vietnam 1965-1971 scenarios, black softcover ISBN 0-945571-83-6
14200	1st ed	Phoenix Command	Playing Aids, punched counters and reference sheet, no ISBN
10230	1st ed	Phoenix Command	Artillery System, black softcover ISBN 0-945571-80-1
10240	1st ed	Phoenix Command Mechanized	Black softcover, no ISBN
10241	1st ed	Phoenix Command Mechanized	Light Vehicles Light Fighting Vehicles, black softcover, no ISBN
10242	1st ed	Phoenix Command Mechanized	Panzer World War II Medium Tanks, black softcover, ISBN 0-945571-42-9
10243	1st ed	Phoenix Command Mechanized	King Tiger World War II Heavy Tanks, black softcover ISBN 0-945571-43-7
10244	1st ed	Phoenix Command Mechanized	Pak Front World War II Antitank Guns, black softcover, no ISBN
14240	1st ed	Phoenix Command Mechanized	Playing Aids punched counters and reference, no ISBN
10300	1st ed	Living Steel	Black Boxed Set
10300	2nd ed	Living Steel	Black hardcover
10301	1st ed	Living Steel	Operation: Seven Swords, black softcover
10302	1st ed	Living Steel	KViSR Rocks! Black softcover
10303	1st ed	Living Steel	Trident/RMBK, black softcover
10304	1st ed	Living Steel	Rhand: 2349 World Atlas, black softcover
10305	1st ed	Living Steel/Phoenix Command	Heavy Metal Power Armor Sourcebook, black softcover, ISBN 0-945571-34-8
10400	1st ed	Dragonstar Rising	Boxed set boardgame
20100	1st ed	ALIENS	boardgame
20200	1st ed	ALIENS	Black softcover role-playing game
30100	-	-	Stock number skipped when Predator 2 RPG deal fell through. See the LEGionnaire fan magazines for details.
40100	1st ed	Lawnmower Man	Black softcover RPG
50100	1st ed	Bram Stoker's Dracula	Black softcover RPG
60100	1st ed	Army of Darkness	Boardgame
70100	1st ed	Terminator 2	Year of Darkness miniatures game