Here's the complete list (as far as I can remember)
001-Kyogre EX (Non-Holo & Holo)
- Non was in Nintendo Power & Scyre
- Holo was GenCon, i think
002-Grodoun EX (Same as above)
- same as above
003-Trecko (Reverse Holo)
- League
004-Grovyle (Winner)
- League
005- Mudkip (Pokeball Stamp, Holo)
- League (orignally in UK, in US during June 2004)
006- Torchic (Pokeball Stamp, Holo)
- League (orignally in UK, in US during July 2004)
007- Trecko (Pokeball Stamp, Holo)
- League (orignally in UK, in US during August 2004)
008-Torchic (Reverse Holo)
-League
009-Combusken (Winner)
- League
010-Mudkip (Reverse)
-League
011-Marshtomp (Winner)
-League
012-Pikachu (Holo)
-Tin
013-Meowth (Holo)
-Tin
014 & 015-Latios & Latias
-Pokemon Heroes
016-019-Torchic, Trecko, Mudkip, Whismur
-Target, when you bought an Icee
020-Ludicolo
-EX Value Pack (one w/ 1 RS-Dragon Boosters)
021-Jirachi
-Wishmaker movie
022-Beldum (League/TRU/Florida Gym Challenge)
-league, winner & non winner
-TRU, non winner
-GC Florida, non winner
023-Chimeco (Non Winner & Winner)
-league
Charmander-CC
Charmeleon-SC
Beldum-GC
Charizard-NC
Metang-SC
Holo Flygon, Salamance, Multi, Darkness & Metal (Holo Non Winner & Winner)
- league
Prerelease Armaldo, Gyarados, TA Cacnea, Swalot
That should be it.