Wells Street By Lang-Simply Grateful Adult Coloring Book. Color in incredible designs based on artwork by some well-known designers. Let your imagination run wild with 100 designs while relieving stress and expressing your creativity. Wells St. by Lang adult coloring books also feature micro-perforation on each acid-free page for easy removal! Designs range in complexity from beginner to expert-level. Detailed coloring designs on premium weight pages. Micro-perforated pages for easy removal. Softcover, 102 pages. Published Year: 2016. Imported.