Several pipe bowls and pipe stems of the Iowa tribe have entered into the collection of the Milwaukee Public Museum thanks to the efforts of Alanson Skinner, a former curator of Anthropology. The exquisite craftsmanship of each pipe is a testament to the importance of the ritual of smoking during ceremonies by the ruling members of society. The bowls of the pipes are made from a stone known as catlinite, and the stems are made from ash wood. Decorations on the stems include wrapped porcupine quills and feathers and sometimes bird skins. Each pipe is a representation of a different creature, including a lizard, a raccoon, a wolf, pigeons, and black bears.