Below is a shortlist just to make it easy to find all episodes.

Pokémon Episode 01. Pokémon, I Choose You!
Pokémon Episode 02. Pokémon Emergency!
Pokémon Episode 03. Ash Catches a Pokémon
Pokémon Episode 04. Challenge of the Samurai
Pokémon Episode 05. Showdown in Pewter City
Pokémon Episode 06. Clefairy and the Moon Stone
Pokémon Episode 07. The Water Flowers of Cerulean City
Pokémon Episode 08. The Path to the Pokémon League
Pokémon Episode 09. The School of Hard Knocks
Pokémon Episode 10. Bulbasaur and the Hidden Village
Pokémon Episode 11. Charmander – The Stray Pokémon
Pokémon Episode 12. Here Comes the Squirtle Squad
Pokémon Episode 13. Mystery at the Lighthouse
Pokémon Episode 14. Electric Shock Showdown
Pokémon Episode 15. Battle Aboard the St. Anne
Pokémon Episode 16. Pokémon Shipwreck
Pokémon Episode 17. Island of the Giant Pokémon
Pokémon Episode 18. Beauty and the Beach
Pokémon Episode 19. Tentacool & Tentacruel
Pokémon Episode 20. The Ghost of Maiden’s Peak
Pokémon Episode 21. Bye Bye Butterfree
Pokémon Episode 22. Abra and the Psychic Showdown
Pokémon Episode 23. The Tower of Terror
Pokémon Episode 24. Haunter versus Kadabra
Pokémon Episode 25. Primeape Goes Bananas
Pokémon Episode 26. Pokémon Scent-sation!
Pokémon Episode 27. Hypno’s Naptime
Pokémon Episode 28. Pokémon Fashion Flash
Pokémon Episode 29. The Punchy Pokémon
Pokémon Episode 30. Sparks Fly for Magnemite
Pokémon Episode 31. Dig Those Diglett
Pokémon Episode 32. The Ninja Poké-Showdown
Pokémon Episode 33. The Flame Pokémon-athon!
Pokémon Episode 34. The Kangaskhan Kid
Pokémon Episode 35. The Legend of Dratini (Banned Episode)
Pokémon Episode 35. The Bridge Bike Gang (Official)
Pokémon Episode 36. Ditto’s Mysterious Mansion
Pokémon Episode 37. Pikachu’s Goodbye
Pokémon Episode 38. The Battling Eevee Brothers
Pokémon Episode 39. Wake Up Snorlax!
Pokémon Episode 40. Showdown at Dark City
Pokémon Episode 41. The March of the Exeggutor Squad
Pokémon Episode 42. The Problem with Paras
Pokémon Episode 43. The Song of Jigglypuff
Pokémon Episode 44. Attack of the Prehistoric Pokémon
Pokémon Episode 45. A Chansey Operation
Pokémon Episode 46. Holy Matrimony!
Pokémon Episode 47. So Near, Yet So Farfetch’d
Pokémon Episode 48. Who Gets to Keep Togepi?
Pokémon Episode 49. Bulbasaur’s Mysterious Garden
Pokémon Episode 50. Princess vs. Princess
Pokémon Episode 51. The Purr-fect Hero
Pokémon Episode 52. The Case of the K-9 Capers!
Pokémon Episode 53. Pokémon Paparazzi
Pokémon Episode 54. The Ultimate Test
Pokémon Episode 55. The Breeding Center Secret
Pokémon Episode 56. Riddle Me This
Pokémon Episode 57. Volcanic Panic
Pokémon Episode 58. Beach Blank-Out Blastoise
Pokémon Episode 59. The Misty Mermaid
Pokémon Episode 60. Clefairy Tales
Pokémon Episode 61. The Battle of the Badge
Pokémon Episode 62. It’s Mr. Mime Time
Pokémon Episode 63. Holiday Hi-Jynx
Pokémon Episode 64. Snow Way Out
Pokémon Episode 65. Showdown at the Po-Ké Corral
Pokémon Episode 66. The Evolution Solution
Pokémon Episode 67. The Pi-Kahuna
Pokémon Episode 68. Make Room for Gloom
Pokémon Episode 69. Lights, Camera, Quack-tion!
Pokémon Episode 70. Go West Young Meowth
Pokémon Episode 71. To Master the Onix-pected
Pokémon Episode 72. The Ancient Puzzle of Pokémopolis
Pokémon Episode 73. Bad to the Bone
Pokémon Episode 74. All Fired Up!
Pokémon Episode 75. Round One – Begin!
Pokémon Episode 76. Fire and Ice
Pokémon Episode 77. The Fourth Round Rumble
Pokémon Episode 78. A Friend in Deed
Pokémon Episode 79. Friend and Foe Alike
Pokémon Episode 80. Friends to the End