Pieter Maessens
- Brief biography with internal links to his historical period from the Here of a Sunday Morning radio program.
- http://www.hoasm.org/IVK/Maessens.html

Maessens, Pieter
- Biography noting his progression toward the Viennese court chapel from the Grove Concise Dictionary of Music entry at WQXR radio.
- http://www.wqxr.com/cgi-bin/iowa/cla/learning/grove.html?record=5636