SOLVED. Children's Picture Book with child climbing many stairs, gets a puppy. Read around 1965-1968.

[Barri]

A book from my childhood read around 1965-68. This was a large picture book, possibly sepia/brown illustrations as opposed to very colorful.

Plot may involve a child/boy searching for something, climbing many steps at some point, and in the end is a puppy (possibly with fluffy ears).

[Barri]

Solved! I knew it had a tree: https://www.goodreads.com/book/show/2...