de Jonge mentions in the short list of normative Ammianus editions in the latest multi volume Groningen Ammianus edition, a project that was started in 1972 and is still in progress.
Accedit specimen scholiorum ad Homerum ineditorum, ex codice Vossiano Bibliothecae Lugduno-Batavae.
or people wrestling with the Julian- and Gregorian calenders there's an absolute great tool/website called: The Perpetual Calendar.
Persons, researchers who want professional help for historical and/or genealogical research, basic or extensive look-ups in (specialized) libraries or archives should definitely visit the 'Dutch Archives historical research bureau'.(Amateur) photographers daily provide this database of new photographs from all over the country.
Take a -large- cup of coffee, and you'll be much wiser when you finished drinking it to the bottom...