Albert Einstein | Royal Albert Hall | Victoria and Albert Museum | Albert Camus | Prince Albert | Albert Park | Albert Speer | Albert Schweitzer | Albert, Prince Consort | Albert Campion | Albert | Albert Park, Victoria | Albert II, Prince of Monaco | Albert Bierstadt | Albert Finney | Johann Albert Fabricius | Albert R. Broccoli | Albert Lee | Eddie Albert | Albert Einstein College of Medicine | Albert Bandura | Albert Watson (photographer) | Albert Watson | Albert King | Albert II of Belgium | Albert Brooks | Albert I of Belgium | Albert Gleizes | Mount Albert | Albert, Somme |
Witsen wrote under a pseudonym in the literary magazine De Nieuwe Gids, which he also supported financially.His circle of friends included the painters George Hendrik Breitner, Isaac Israëls, and Jan Veth and the writers Lodewijk van Deyssel, Albert Verwey, Willem Kloos, and Herman Gorter.