About
"Digital Raster Graphic (DRG) images of USGS standard series quadrangles cover systematically subdivided areas of latitude with formats ranging from 7.5- by 7.5-minutes to 1- by 2-degrees. DRG's of standard quadrangles range in scale from 1:20,000 to 1:250,000. DRG's coverages include the conterminous United States, Alaska, Hawaii, Puerto Rico and the Virgin Islands"--DRGP̲KG.TXT file.
Discuss DRG with other readers
Join or start a book club for DRG on Readfeed. Live chat, shared reading progress, and AI discussion questions — free to get started.
Frequently asked questions
How do I join a book club for DRG?
Sign up free on Readfeed, then browse public clubs or start your own club with DRG as the current read. Invite friends with a share link and discuss together with live chat and AI discussion questions.
Can I discuss DRG with other readers online?
Yes. Readfeed book clubs let you chat live, share progress, and join discussions about DRG with readers worldwide — whether your club is virtual, in-person, or hybrid.
Is Readfeed free?
Yes. Creating an account and joining book clubs is free. Sign up to find readers who love the same books and start discussing today.