To say Irving Harper once worked in the office of George Nelson is kind of like saying Hillary Clinton once worked in the office of Barack Obama — Harper’s contributions were almost too many to count. He worked under Nelson for 17 years and was responsible for some of the studio’s — and design history’s — most famous works, including the Marshmallow sofa and Herman Miller’s still-current logo. Rizzoli recently published a book on Harper, but it wasn’t to set the record straight about who did what (there’s long been controversy over Nelson receiving credit for things that were actually authored by Harper.) No, the book, Irving Harper: Works in Paper, reveals Harper’s even more secret life.