| Author: | Wirt, Mildred A. (Mildred Augustine), 1905-2002 |
| Subject: | PZ, Parker, Penny (Fictitious character) -- Juvenile fiction, Adventure and adventurers -- Juvenile fiction, Women detectives -- Juvenile fiction, Mystery and detective stories |
| Format: | Text |
| Date issued: | 2011 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | Whispering Walls [electronic resource] / Mildred A. Wirt |