# The Hidden Staircase

> 1930 novel by Carolyn Keene

**Wikidata**: [Q2836695](https://www.wikidata.org/wiki/Q2836695)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/The_Hidden_Staircase)  
**Source**: https://4ort.xyz/entity/the-hidden-staircase


## References

1. MusicBrainz
2. [Source](https://archive.org/details/hiddenstaircase00keen)
3. Goodreads