As you might expect, most of the work in Quilt National was machine quilted, some minimally, some lushly. I gravitate toward dense and lavish quilting, and found lots to take detail shots of. Here are some of the most impressive examples.
the quilting makes a map of the Arctic
the entire quilt is covered with machine-quilted letters, about two inches square
The stitching lines are about 1/8 inch apart.
But maybe you prefer a more minimalist approach to quilting. In that case, you would love this piece -- clearly the least quilting per square foot in the show.
Those little dimples across the center of the photo are hand stitches, so tiny as to be practically invisible, maybe an inch apart horizontally but the rows are several inches apart vertically. They do hold the quilt together very nicely.