Sac (people) in the context of "Sac and Fox Tribe of the Mississippi in Iowa"

Great Lakes Algonquian syllabics (or Great Lakes Aboriginal syllabics, also referred to as "Western Great Lakes Syllabary" by Campbell) is a writing system for several Algonquian languages that emerged during the nineteenth century and whose existence was first noted in 1880. It was originally used near the Great Lakes: Fox (also known as Meskwaki or Mesquakie), Sac (the latter also spelled Sauk), and Kickapoo (these three constituting closely related but politically distinct dialects of a single language for which there is no common term), in addition to Potawatomi. Use of the script was subsequently extended to the Siouan language Ho-Chunk (also known as Winnebago). Use of the Great Lakes script has also been attributed to speakers of the Ottawa dialect of the Ojibwe language, but supporting evidence is weak.

Consonant and vowel letters that comprise a syllable are grouped into units that are separated by spaces. The system is of interest to students of writing systems because it is a case of an alphabetic system acquiring aspects of a syllabary.