Guggenheim International Exhibition - 1971 - Portfolio of Portfolios

Here's a very interesting reference book i found the other day in a second-hand store. It's a complete folio of mini-folios on the likes of Sol Lewitt, Richard Serra, Carl Andre, Bruce Nauman, Dan Flavin, Richard Long, and quite a few i've never heard of. All recipients of the Guggenheim International Award for the 'highest level of contemporary artistic achievement'. Artists from Brazil, Japan, Germany, Italy, the Netherlands, and mostly from the usa. 1971. 4500 copies made by the Guggenheim Foundation. Lots of interesting reading here!