Penn-Helsinki parsed corpora of historical English

"The Penn Historical Corpora, including the Penn-Helsinki Parsed Corpus of Middle English, second edition (PPCME2), the Penn-Helsinki Parsed Corpus of Early Modern English (PPCEME), and the Penn Parsed Corpus of Modern British English (PPCMBE), are syntactically annotated corpora of prose text samples of English from the indicated time periods. Their syntactic annotation (parsing) permits searching not only for words and word sequences, but also for syntactic structure. The corpora are designed for the use of students and scholars of the history of English, especially the historical syntax of the language, and they are publicly available. The Penn Historical Corpora are distributed with a search program CorpusSearch2, written by Beth Randall and released as open source software downloadable from its Sourceforge project web site."--Penn Parsed Corpora of Historical English website