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Austro-Hungarian price and wage data (1827 - 1913) in the Global Price and Income History Project

GIS shapefile of the 1910 administrative units of Austria-Hungary at Mosaic

GIS and other data files at GISta Hungarorum

Complete series of Oesterreichische Statistik (Bd 1-93) at the ÖNB's ANNO database

Historical publications pertaining to Hungarian population censuses at hungaricana.hu

Historical maps of the Habsburg monarchy in the David Rumsey Map Collection

Historical business database at ZEDHIA

Retrospective GIS of residential localities in modern-day Czech Republic CZ_RETRO

The IFO Prussian economic history database, iPEHD

Downloadable historical data for a range of country-level indicators at clio INFRA