Here is an example of Eleanore Mikus' artwork with her lines caused by the folding and re-folding of paper. Images from her website below:

Three Horizontals, folded nacre paper, 1968, 13.625"x10.5"

Architectural White Paperfold, 2000, 5"x14.5"
White Nacre Handfolded Paper, 1980, 33.5"x23.25"
and from her Black Paperfold series:
Ate, Ink on Handfolded Paper, 2002, 30 1/2"x23"
and from her Colored Paperfold series:
Red Ink and Oil Crayon on Handfolded Paper, 2005, 7" x 7 1/8"
I have her book, there is also a catalog from The Drawing Center on her work as well. The book information: Eleanore Mikus: Shadows of the Real by Robert Hobbs and Judith Bernstock; Ithaca: Groton House, 1991. Amazon link here.