From Broken Bits of Byzantium (1872) by C. G. Curtis
This short book quickly dismisses the legends surrounding the rise of the House of Osman in favor of a much more plausible narrative. While the other post-Seljuk Beyliks boxed themselves into Anatolia, only the Ottomans had room to expand — into Byzantium.
https://www.amazon.com/Origins-Ottoman-Empire-Economic-History/dp/0791408205