Taking a stroll through my UWS NYC neighborhood I noticed many of my neighbors' Autumn decor had gourds that looked more exotic than usual. So of course I had to google their images. I found a great site that answered every question I had about gourds, and some I hadn't even thought of.
The Leafy Place has images and information that identifies gourds and pumpkins, tells the difference between them [gourds and pumpkins are not the same thing], and lets you know which are edible, and which are not and why.
Happy Autumn and Happy Thanksgiving
[photo credit: sookietex]