Baard, the director of the Stedelijk Museum, and though his father wished he would follow a career in the wood trade, he studied art history and accepted a job as a volunteer with the Rijksmuseum.
When he succeeded Gerrit David Gratama as director of the Frans Hals Museum, he moved to the upper floor of the Jacobus van Looy house, where he stayed until it was sold in 1967.
In 1943 Baard acted als guardian of the Muiderslot while being head of the Rijksmuseum's historical department.
His main achievement was the great international Frans Hals exhibition in 1962 and the scientific catalog that he published with it, that had contributions by Carla van Hees and the young Seymour Slive.
According to the RKD he was scientific assistant at the Rijksmuseum 1935-1945 and from 1946-1972 he became museum director in Haarlem and is known for his research books on art history.