By Thomas Parker Williams
Philadelphia, Pennsylvania: Thomas Parker Williams, 2010. 
Edition of 8. 

Thomas Parker Williams: "Mountainside Matrix is a book structure representing the natural complexity of a mountainside forest in autumn. 

"The basic structure is made up of six, 12-panel parallel accordions tied together at each end and spaced apart to allow for collapsing to a flat form. Additional tie points are added in 20 places to allow for uniform movement when collapsing and extending. Magnetic catches secure the structure in the open and closed positions." 
 
8 x 11.25 x 1.75" closed, opens to 8 x 11.75 x 16"; 72 paper panels. Seven colors, printed double-sided (reduction linocut), cut with scroll saw, mounted on a dyed tyvek 6 x 12" accordion matrix in case that is bound in dyed tyvek and printed with single color linocut front, back, and sides. Magnetic catches secure the structure in the open and closed positions. Signed and numbered by the artist.
 
(Last 3 copies)