Well, more and more letters came for Kris from the children. Jessica would gather them together and then give them to the animals who would deliver them.

8 seconds sound clip from the Santa Claus Is Comin' to Town (1970) movie soundboard.

You can hear this line at 00:31:25.794 in the Blu-ray version of the movie.

Quote context

[...]

- Well, I guess they're all pretty nice.

- So he packed up, and was off to Sombertown.

- When Kris was safe inside Sombertown, he tried all the doors. And if they were open, he knew a child lived inside who was expecting a toy.

- This is outrageous. Toys, toys everywhere!

- What sort of criminal is this Kringle? Sneaking into houses by night. I hereby decree that all the town's doors and windows will be locked tight against this prowler.

- Well, more and more letters came for Kris from the children. Jessica would gather them together and then give them to the animals who would deliver them.

- And Kris, well, he just couldn't turn anybody down.

- But this time, he found all the doors were locked to him.

- Now, there was once special toy he just had to deliver.

- Susie, a tiny little girl who was very, very sick had asked Kris for a toy Noah's Ark. Kris just couldn't disappoint her.

[...]