While googling for Gn. Pompeius Strabo for our current book chat, The Grass Crown – with not much success – I found these Google Books:
Lectures on the history of Rome (from the earliest times to the fall of the Western empire), Volume I and Volume II by Barthold Georg Niebuhr, Taylor and Walton, London 1844. (There is obviously more to come.)
The lectures were first published between 1811 and 1832.
Barthold Georg Niebuhr (1776-1831) was a German statesman, diplomat, and historian.
Niebuhr at Wikipedia (as usual, handle with care). Most of the text is from the Encyclopædia Britannica Eleventh Edition. “Niebuhr's Roman History counts among epoch-making histories both as marking an era in the study of its special subject and for its momentous influence on the general conception of history.”
Niebuhr is universally conceded Germany's first great scholar of antiquity. He also has been called the “German Tacitus.”
One wonders, if Niebuhr would have lived a long life, how he, a conservative, and Theodor Mommsen, the liberal, would have interacted.
Something by Edgar Allan Poe: Review of Lieber's Reminiscences of Niebuhr, from Southern Literary Messenger, January 1836.
Niebuhr's father, Carsten, was no slouch either, a self-made man best known for participating as a surveyor and geographer in an expedition to the Near East in the 1760s, and after the expedition folded due to the deaths of most of its members, traveling to India and the Middle East.
JSTOR (limited access) has:
Barthold Georg Niebuhr and the Enlightenment Tradition, Peter Hanns Reill, German Studies Review, Vol. 3, No. 1 (Feb., 1980), pp. 9-26 .
Was There a Roman Homer? Niebuhr's Thesis and Its Critics, Renate Bridenthal, History and Theory, Vol. 11, No. 2 (1972), pp. 193-213.
Niebuhr and the Agrarian Problems of Rome, History and Theory, Vol. 21, No. 4, Beiheft 21: New Paths of Classicism in the Nineteenth Century (Dec., 1982), pp. 3-15.
Leges Agrariae: Myths Ancient and Modern, Ronald T. Ridley, Classical Philology, Vol. 95, No. 4 (Oct., 2000), pp. 459-467.
A Review by Gordon A. Craig: Barthold Georg Niebuhr als Politiker und Historiker: Zeitgeschen und Zeitgeist in den Geschichtlichen Beurteilungen von B. G. Niebuhr by Seppo Rytkonen (plus Leopold von Ranke als Akademischer Lehrer: Studien Zu Seinen Vorlesungen und Seinem Geschichtsdenken by Gunter Berg), The American Historical Review, Vol. 75, No. 1 (Oct., 1969), pp. 147-148.
…and more, six pages altogether.