I screenprint each of these by hand (locally in Durham, at Super G Printlab)! They are all 13x19" or 11x17" and printed on various kinds of paper using analogue printmaking techniques.
 
Coffee Map - 13x19" Beige or brown textured poster cardstock; screenprinted with a hand-painted acrylic background
Sweet Tooth Map - 13x19" Blue textured post cardstock; screenprinted with a handpainted acrylic background
Durham Blossoms - 13x19" Light pink poster cardstock OR plain white laser paper (white prints are discounted at $5); two-layer screenprinting
Urban Foraging - 11x17" white poster cardstock; two- layer screenprinting - colorful background layer printed using a special monoprinting technique that makes each print unique
 
Each print is handmade and may not look exactly as pictured here. That is the beauty of traditional printmaking techniques!