Books in Children's Book Series (sorted by popularity)
- Radio Boys Cronies; Or, Bill Brown's Radio Wayne Whipple and S. F. Aaron 66 downloads
- Elsie's Motherhood Martha Finley 63 downloads
- Elsie at Nantucket Martha Finley 62 downloads
- The Young Engineers in Nevada; Or, Seeking Fortune on the Turn of a Pick H. Irving Hancock 62 downloads
- Boy Scouts on Motorcycles; Or, With the Flying Squadron G. Harvey Ralphson 56 downloads
- The Young Engineers in Mexico; Or, Fighting the Mine Swindlers H. Irving Hancock 55 downloads
- The Boy Allies in Great Peril; Or, With the Italian Army in the Alps Clair W. Hayes 54 downloads
- The Grammar School Boys in Summer Athletics H. Irving Hancock 53 downloads
- The Camp Fire Girls at School; Or, The Wohelo Weavers Hildegard G. Frey 52 downloads
- The Adventures of Mr. Mocker Thornton W. Burgess 52 downloads
- Nan Sherwood's Winter Holidays; Or, Rescuing the Runaways Annie Roe Carr 49 downloads
- Elsie's Kith and Kin Martha Finley 48 downloads
- The Radio Boys in the Thousand Islands; Or, The Yankee-Canadian Wireless Trail Frank Honeywell 47 downloads
- Dave Darrin's First Year at Annapolis H. Irving Hancock 47 downloads
- Uncle Sam's Boys with Pershing's Troops H. Irving Hancock 46 downloads
- Christmas with Grandma Elsie Martha Finley 46 downloads
- The Young Engineers on the Gulf H. Irving Hancock 46 downloads
- The Hilltop Boys on the River Cyril Burleigh 46 downloads
- The Boy Allies in the Balkan Campaign; Or, the Struggle to Save a Nation Clair W. Hayes 46 downloads
- Dave Darrin's Fourth Year at Annapolis: Headed for Graduation and the Big Cruise H. Irving Hancock 44 downloads
- The Outdoor Girls of Deepdale; Or, camping and tramping for fun and health Laura Lee Hope 43 downloads
- The Tale of Old Mr. Crow Arthur Scott Bailey 43 downloads
- The Boy Scouts on Picket Duty Robert Shaler 43 downloads
- The Camp Fire Girls at Camp Keewaydin; Or, Paddles Down Hildegard G. Frey 43 downloads
- The Motor Maids in Fair Japan Katherine Stokes 43 downloads
