There is now a Tsisinstsistots (Cheyenne) dictionary online! Brought to the world by the good people at Chief Dull Knife College, the dictionary includes Tsisinstsistots > English and English > Tsisinstsistots sections. Abbreviations used in the dictionary are described on the Introduction page, which also includes links for printed versions of the dictionary and a CD-ROM, which costs $6 plus $3 for shipping or is free to copy from somebody else. Of the some 18,000 entries, about 7000 are recorded on the CD-ROM.
The online version has been reviewed on the Anggarrgoon blog and includes comments from Wayne Leman, one of the authors.