4 Resources share the relationship broadcaster to Public Broadcasting Service (U.S.)

Nature, a production of The WNET Group and Blue Ant Commissioning USA LLC in association with CosmoVision Media Group, LLC for Love Nature ; produced by Jacob Steinberg ; written by Janet Hess ; series producer, Bill Murphy
Nature, a production of Passion Planet, the WNET Group, and HHMI Tangled Bank Studios in association with Ammonite Films ; produced by Thirteen Productions ; directed by David Allen ; written by David Allen and Martin Dohrn ; produced by Gaby Bastyra ; series produced by Bill Murphy
Hemingway, producers, Sarah Botstein, Lynn Novick, Ken Burns ; written by Geoffrey C. Ward ; directors, Ken Burns, Lynn Novick
Call the midwife, a Neal Street production for BBC and PBS ; series created by Heidi Thomas, Season eight