Wouldn't it be safer to keep her here? Even Superman's x-ray eyes couldn't see through these lead walls.
4 seconds sound clip from Superman (1948) - A Job For Superman (Chapter 5).
You can hear this line at 00:03:09.990 in the Blu-ray version of the episode.
Quote context
[...]
- Thanks.
- Not bad. I have no complaint about the way you handled the problems of the lovelorn. Very tactful.
- White speaking. Yes, Jimmy. They took Lois with them? Stand by, I'll have Kent join you.
- Well, I heard what he said, to Third and Front Street.
- Have two of the men take her to the warehouse in the city.
- He won't find her at the warehouse, either, in time. I'll see to that.
- Hop in.
- Lois got a tip from that stool pigeon, Hawkins.
[...]