Nineteenth Century Collections Online provides a wealth of historical books, primers, pamphlets, forms, and other primary material from the 19th century. This is a fantastic place to turn when tracing the historical development of a topic related to education or childhood.
See the guide below for searching historical newspapers.
Hathi Trust trust provides access to historical books, diaries, travel logs, and other types of primary material. The digital library is fully searchable and searches can be refined by year or language.