| | The city derived its early importance from the railroad, which made it a major shipping point for local agriculture. According to one report, some 400 people were employed by the railroad in Thayer at the turn of the century, and it boasted such institutions as an opera house, two newspapers, and six churches.<ref>https://archive.org/details/statemissouri00willgoog/page/n506/mode/2up</ref> The decline of the railroad, beginning in the 1920s, brought an end to some of this activity, but Thayer remained generally stable over the next several decades, and has increased somewhat in size more recently. | | The city derived its early importance from the railroad, which made it a major shipping point for local agriculture. According to one report, some 400 people were employed by the railroad in Thayer at the turn of the century, and it boasted such institutions as an opera house, two newspapers, and six churches.<ref>https://archive.org/details/statemissouri00willgoog/page/n506/mode/2up</ref> The decline of the railroad, beginning in the 1920s, brought an end to some of this activity, but Thayer remained generally stable over the next several decades, and has increased somewhat in size more recently. |
| | + | Thayer is located in southwestern Oregon County, about one mile north of the Arkansas state line, at the intersection of U.S. Route 63 and Missouri State Highway 142. The city of Mammoth Springs lies just beyond the boundary to the south, and the two are in a sense "sister cities." Thayer is also about 14 miles southwest of [[Alton, Missouri|Alton]], and seven miles southeast of [[Koshkonong, Missouri|Koshkonong]]. Its exact coordinates are 36°31’27”N 91°32’38”W. |
| | + | The city lies along a branch of the Spring River, with the downtown section lying on a low bluff overlooking the stream. A notable natural attraction in the area is "Grand Gulf," a canyon formed by the collapse of an underground cave system, a few miles to the west. Thayer has a total land area of 2.44 square miles, and an average elevation of 528 feet.<ref>https://web.archive.org/web/20120125061959/http://www.census.gov/geo/www/gazetteer/files/Gaz_places_national.txt</ref> |