City Green: Innovative Green Infrastructure Solutions for Downtowns and Infill Locations (PDF) 1, 72. United States Environmental Protective Agency (2016-05). Retrieved on 2023-09-12. Used twice: as lead photo on cover (page 1 of PDF) and as an illustration of the Thornton Creek water quality channel on page 68 of the document (page 72 of PDF). In crediting me, they mis-refer to this site as "Wikipedia Commons". - Jmabel ! talk
