Agency - English program:.Ontario Centre. Agency:.Produced by the National Film Board of Canada and The New York Times. Study guide available.

Director, Katerina Cizek ; writer, Katerina Cizek ; editor, Katerina Cizek ; producer, Gerry Flahive ; series researcher, Lindsay Crouse ; animation, Matt Brushett ; illustrations, Felix Wittholz ; executive producer, Silva Basmajian, Jason Spingarn-Koff ; sound editor, Janine White ; visual researcher, Elizabeth Klinck, Jivan Nagra ; voice recording engineer, Steve Blair ; sound mixing, Ian Rodness ; advisor, Deborah Cowen, Miles Glendinning, Robin LeBaron, Graeme Stewart.

Narrator, null Feist.

Recorded 2013.

In the first episode of a four-part series, "Mud" traces the roots of the residential highrise, from the biblical Tower of Babel to New York's tenement buildings.

Mode of access: World Wide Web.

Description based on online resource; title from title screen (National Film Board of Canada, viewed 2023-08-10).