Friedrich Dietz von Weidenberg documented the Vienna Krieau trot racing system with 54-stand stable buildings, showing situation plan and cuts on pencil pre-drawing with black spring drawing, blue watercolor recto, red and yellow verso, and wax screen.

Royalty-Free Standard Commercial licenses are granted for worldwide, non-exclusive and perpetual use, unless specifically noted otherwise. All Royalty-Free transactions are final. The Royalty-Free Standard Commercial license has no limitations and covers up to 15 users.