"Lake County Florida, A Pictorial History" by Emmett Peter Jr.
This book has alot of pictures of Lake County and history of many of the towns.
"Mount Dora Florida, A Short History" by James M. Laux
This book has alot of history about Mt Dora
Memories of Mt Dora and Lake County 1845-1981" by Dave Edgerton
"Groveland" by Doris Bloodsworth
"Umatilla - A Photographic History" by Rebecca Bryan Dreisbach
 "History of Lake County Florida", Facsimile Edition 1929, Historical Society of Tavares Fl
   Editor-In-Chief - Wm T. Kennedy
   This book has lots of information on the families who settled in Lake County, the towns, industries,
    agricultural and biographical sketches of the leading citizens of Lake County FL