Electronic editions of classic Cree resources: classic dictionaries, grammars and text collections that formed the foundation of the scholarly understanding of Plains Cree.
Bloomfield, Leonard. 1930, 1934.
Sacred Stories of the Sweet Grass Cree. F.A. Acland, Ottawa.
http://peel.library.ualberta.ca/bibliography/5409.html
Plains Cree Texts. American Ethnological Society Publications 16. New York
http://creeliteracy.org/2016/01/07/bloomfield-plains-cree-texts-online/
Howse, Joseph. 1844.
A grammar of the Cree language: with which is combined an analysis of the Chippeway dialect. Rivington, London.
http://archive.org/stream/agrammarcreelan00howsgoog#page/n10/mode/2up
Lacombe, Albert. 1874.
Dictionnaire de la langue des Cris. Beauchemin & Valois. Montréal.
http://archive.org/stream/dictionnairedela01laco#page/n7/mode/2up
Grammaire de la langue des Cris. Beauchemin & Valois. Montréal.
http://archive.org/stream/cihm_30288#page/n5/mode/2up
Watkins, E.A., 1865.
A dictionary of the Cree language as spoken by the Indians of the Hudson’s Bay Company’s Territories. Society for Promoting Christian Knowledge. London.
http://archive.org/stream/adictionarycree00watkgoog#page/n3/mode/2up
Wolfart, H. Christoph. 1973.
Plains Cree: a grammatical study. American Philosophical Society Transactions n.s. 63, pt. 5. Philadelphia.
https://csclub.uwaterloo.ca/~rfburger/language/wolfart_-_plains_cree_1973.pdf
Explore many more early dictionaries, word lists and grammars of a variety of Cree languages and dialects at:
http://www.massinahigan.ca/dictionaries.html
Another new resource to add to this collection is the Archive of the Papers of the Algonquian Conference, recently created at Carleton University. You may search volume by volume (at https://ojs3.library.carleton.ca/index.php/ALGQP/issue/archive), or look for author, language name, or subject keywords using the Search page (https://ojs3.library.carleton.ca/index.php/ALGQP/search)