SLAVE ROCK
Missouri Historical Landmark

Exhibit I

The History of Slave Rock

An evidence-based look at the stories surrounding the landmark — what is documented, what is remembered, and what remains unknown.

I.

Origins of the Name

The formation is known by two names: Slave Rock and Graham Rock. The name Slave Rock stems from local tradition and the belief that slave auctions or related events occurred on this property, which in the nineteenth century belonged to Dr. Robert Graham, a slaveholder. The second name, Graham Rock, preserves that ownership.

Research Pending

Deeds, tax and census records documenting Dr. Robert Graham’s ownership of the property, and the earliest printed use of each name, still need to be located.

II.

The Slave Auction Legend

Local tradition holds that enslaved people were sold at, or assembled for sale on, the property owned by Dr. Robert Graham. It is that belief, passed down through generations, that gave the rock its name. Such accounts remain an important part of how the site is remembered.

To date, this project has not identified documentary evidence — such as bills of sale, estate records or contemporary newspaper notices — that confirms auctions took place at this specific location. The account is therefore presented here as oral tradition, not established fact.

Source Needed

Earliest recorded version of the tradition and its source.

III.

Slavery in Missouri

Missouri entered the Union in 1821 as a slave state under the Missouri Compromise. Slavery was concentrated along the Missouri River counties of central Missouri — a region sometimes called “Little Dixie” — where enslaved people worked farms producing hemp, tobacco and livestock, and labored in households.

Under state law, enslaved people were treated as property: they could be sold, mortgaged or divided among heirs, and families were frequently separated through sales and estate settlements. Despite this, enslaved Missourians built families, communities and faith, and many resisted through escape and, later, by enlisting in the Union Army.

Missouri abolished slavery by ordinance on January 11, 1865, before ratification of the Thirteenth Amendment.

IV.

Montgomery County in the 1800s

Montgomery County was organized in 1818, before statehood. Its early economy was agricultural, shaped by the Missouri River to the south and overland routes linking St. Louis to the interior.

Research Pending

Details on early settlement near Mineola, local roads, mills and commerce from county histories.

V.

The Construction of Interstate 70

Missouri was among the first states to begin work under the Federal-Aid Highway Act of 1956. Travelers today note that the roadway passes close by the rock.

Research Pending

Highway department records explaining the routing decision at this site. Popular claims that the road was deliberately built around the rock should not be repeated until verified.

Museum Feature

History vs. Legend

Verified History+
  • Montgomery County organized in 1818
  • Missouri admitted as a slave state in 1821
  • Slavery abolished in Missouri, January 11, 1865
  • The formation stands beside I-70 near Mineola
  • The property belonged in the 1800s to Dr. Robert Graham, a slaveholder
Oral Tradition+
  • Slave auctions or related events took place on Dr. Robert Graham’s property
  • The rock served as a known gathering point
  • The highway was routed to spare the rock
Unanswered Questions+
  • What records document Dr. Robert Graham’s ownership of the property?
  • When was the name “Slave Rock” first recorded?
  • What records exist on the I-70 routing here?