In 1866 he published Une troupe de comédiens, and afterwards Essai sur la restoration de nos monuments historiques devant l'art et devant le budget, which deals particularly with the restoration of the cathedral of Évreux.
He visited Russia in order to collect documents on the political and economic organization of the Slavic nations, and on his return published in the Revue des deux mondes (1882–1889) a series of articles, which appeared shortly afterwards in book form under the title L'Empire des tsars et les Russes (4th ed., revised in 3 vols., 1897–1898).
The work entitled Un empereur, un roi, un pope, une restauration, published in 1879, was an analysis and criticism of the politics of the Second French Empire.
These writings, mainly collections of articles and lectures intended for the general public, display enlightened views and wide information.
[1] In 1881 Leroy-Beaulieu was elected professor of contemporary history and eastern affairs at the École Libre des Sciences Politiques, becoming director of this institution on the death of Albert Sorel in 1906, and in 1887 he became a member of the Académie des Sciences Morales et Politiques.