Anne Dayez, Michel Hoog, and Charles S. Moffett - Impressionism: A Centenary Exhibition (1974)
Metropolitan Museum of Art main page
(there's a download link to the right)
This is the catalog to a 1974 exhibition exploring the early years of the Impressionist movement. After an overview it contains numerous short but detailed essays on individual works that together explore more substantial history and themes.
The Metropolitan Museum has made a few hundred of its out of print catalogs free to download. On the left the "Book titles with full text online" brings up only these books.