Material created and collected by Michael Merson, documenting his leadership at the World Health Organization's Global Programme on AIDS (GPA). The bulk consists of copies of WHO correspondence, reports, meeting minutes, speeches, press releases, publications and other printed material, in addition to interview transcripts and sound recordings conducted by Merson for the use in book, The AIDS pandemic: searching for a global response (2018), co-authored with Stephen Inrig.

This collection is the by-product of Van Cleaf Bachman's research into the Low Dutch language -- which he describes as a form of Holland Dutch spoken in parts of New York State and New Jersey by the early nineteenth century -- and the preparation of a Low Dutch dictionary.