Spreadsheet of data reproduced from Hantgan, Abbie & Stuart Davis. 2012. Bondu-so vowel harmony: A descriptive analysis with theoretical implications. Studies in African Linguistics 41(1). 1–26.

13th-century Old Norwegian vowel harmony data — filtered and phonologically-annotated for the 600 most common lexemes. For details, see Sandstedt, Jade. Feature specifications and contrast in vowel harmony: The orthography and phonology of Old Norwegian height harmony. University of Edinburgh PhD thesis.

13th-century Old Norwegian vowel harmony data (unfiltered, without phonological annotations). For details, see Sandstedt, Jade. Feature specifications and contrast in vowel harmony: The orthography and phonology of Old Norwegian height harmony. University of Edinburgh PhD thesis.