Oh, well, if you know her name, why don't you try the telephone book?
6 seconds sound clip from the The Moon's Our Home (1941) classic radio play.
You can hear this line at 00:40:18 in the radio play.
Quote context
[...]
- Well, uh... How was the weather?
- What's the matter, Anthony? Upset stomach?
- Now, listen. You've got to help me. Where can I find a girl in this town?
- A girl? Why, er... Oh! My wife has a very nice friend.
- Oh, well, if you know her name, why don't you try the telephone book?
- I've searched the city directory, I've been to the Bureau of Missing Persons. I've done everything!
- Well, uh... What does she look like?
[...]