I am looking for a children’s picture book which I read in the mid 1980s (not sure if it was new at the time) at a public library in Columbus OH.  The story has a mother and daughter that plays on the theme of big and little.
The title is something like ‘When you were little and I was big’ or ‘When I was big and you were little’  – I did find a book with a similar title, but it wasn’t the right one.

Some memorable lines include  – ‘When you were little and I was big I gave you a bath in a teaspoon, and one piece of spaghetti was your whole dinner, and I carried you to school in my pocket’