TY  - SER
AU  -  Patchin, Frank Gee, 
TI  -  The Pony Rider Boys in the Grand Canyon; Or, The Mystery of Bright Angel Gulch 
AV  - PZ 
PY  - 2004///
PB  -  Project Gutenberg, 
KW  -  Grand Canyon (Ariz.) -- Juvenile fiction
KW  -  Horsemanship -- Juvenile fiction
N1  -  Public domain in the USA;  Text
UR  -  http://www.gutenberg.org/ebooks/12997
ER  -