Theodorus Henricus Antonius Adolph Molkenboer was a Dutch painter and designer, notably, of book covers and posters. He was also an expert on the history of Dutch folk costumes and wrote several short works on that subject.

Willink van Collenprijs is a former Dutch art award, which was awarded for the first time in 1880 by the Sociëteit Arti et Amicitiae. It was intended as an encouragement award for young artists, and was considered as a national counterpart to the Paris Salon. Its existence of more than 71 years proves the success of Amsterdam's art policy. For many of its winners, it was a valuable boost to their careers in the Dutch art world. Some of the prize winners were also recognized abroad and remain well known today.