Here are the Doctrine and Covenants scripture mastery passages on a map of the United States to show where they were revealed. It’s interesting to note how much travel Joseph Smith was doing between the various church settlements.
Available in colorized and black and white versions.
Vector illustration of United States courtesty of Vector Portal. http://www.vectorportal.com/subcategory/87/USA-OUTLINE-VECTOR-MAP.eps/ifile/3334/detailtest.asp
** Please note, the scripture mastery passage in Joseph Smith–History is not included here because it does not have a single location. **