Query the HISTMAG Database:
HISTMAG database combines historical and archeo-/paleomagnetic records of the geomagnetic field.
Historical data were either newly acquired or collected from available publications (e.g., Jonkers et al. (2003), Korte et al. (2009), etc.). Archeomagnetic and lava records were directly integrated from GEOMAGIA50.v3 database (Brown et al., 2015).
See the paper (Arneitz et al., 2017) and manual for details. Please report any problems to Patrick Arneitz.