Privides a listing of International concrete poets by country along with a comment about their major categories of work, e.g., visual concrete poetry; visual, typewriter and concrete poetry, etc. ICPA Supplements No.1-4 are the unbound pages that list new items into the collection. In the introduction, P.Claire thanks the Sackners for sharing information about their Archive. -- Source of annotation: Marvin or Ruth Sackner.