Digital Library of Costa Rica

The Digital Library of Costa Rica (SINABI) includes books related to history, culture, and biographies. Works are mostly in Spanish; a few are bilingual.

http://www.sinabi.go.cr/Biblioteca%20Digital/libros_y_articulos.html

The Blue Book of Costa Rica
Published in 1916, this book contains a history of Costa Rica, including biographical information and photographs. The book is bilingual and is divided into 47 pdf files that you can download from SINABI. An index is provided.

http://www.sinabi.go.cr/Biblioteca%20Digital/libros_y_articulos.html

A wiki article describing an online collection is found at:

Costa Rica Civil Registration - FamilySearch Historical Records