TY  - BOOK
AU  - Dixon, Franklin W. 
AU  - Franklin W. Dixon 
TI  - the hardy boys mystery stories 12 : : footprints under the window 
U1  - Fic. D621f 2008  
PY  - 1933///
CY  - New York 
PB  - Grosset & Dunlap 
N2  - Footprints Under the Window (1933) is the 12th Hardy Boys mystery by Franklin W. Dixon. Frank and Joe investigate an espionage ring trying to steal a top-secret invention. After finding mysterious, lingering footprints and a cryptic warning from a runaway, the boys travel to South America to uncover the mastermind
ER  -