The corpus contains both scholarly grammars and teaching grammars. The prevalent form of grammars is textbooks, followed by treatises and catechisms.
@BOOK {, editor={Busse, Beatrix and Gather, Kirsten and Kleiber, Ingo}, title={HeidelGram. A Corpus of English Grammar Books between 1550 and 1900}, address={Heidelberg}, publisher={University of Heidelberg, English Department}, year={2015-}, note={http://heidelgram.de}, language={eng} }