I am looking for corpora of extractive summaries. I am mostly interested in English, and any type of document.
A list of extractive summary corpora can be found over on ResearchGate.
Additionally, a quick search revealed multiple papers on supervised extractive summarization (for example, this one), using the DUC or TAC datasets. Although I've not personally worked with these datasets, if they're used in supervised learning approaches they should contain the information you need.