This place is a place about yellow version in pokemon. Now I will tell you the informations and how you could get Squirtle Charmander and Bulbasaur.And I will tell you where you could catch a pokemon that you can only catch on the yellow version like pokemon that you had to trade with a trainer.
Squirtle Charmander and Bulbasaur
Squirtle-Go to Vermillion city and beat the gym trainer there(Surge)then talk to officer Jenny that is riding on a motorcycle then she would give you Squirtle
Charmander-Go to the Nugget Bridge then go walk up until you see a boy standing there then talk to him and you'll get Charmander
Bulbasaur-Go in the house beside the Pokemon Center in Cerulean City then go in that house then talk to the girl standing beside Bulbasaur then she would give you Bulbasaur(Your Pikachu must be liking you very much to get that Bulbasaur)
Back to Pikachu's Pokemon Stadium