ALS in German, one page, 8 x 6.5, June 19, 1906. A letter from royal son to royal father, in full (translated): “I ask wholly obediently for furlough to Kiel on the 20th and 21st to participate in the regatta.” The Kaiser pencils an affirmative reply at lower left: “In the order tomorrow.” Accompanied by several pages of historical and genealogical information. In fine condition, with light even toning, folds, and light wrinkling, not affecting signatures. R&R COA.