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1846 school atlas map of Oregon and Upper California

Place/Date: Philadelphia / 1846
Title: No. 15 Map of Oregon and Upper California
20.4 x 25.4 cm (8 x 10 in)
Hand color
Condition Rating


This is the smaller school atlas version of Mitchell’s well-known map, which is itself based largely on Fremont’s map of 1845.

This edition has the US/Canadian boundary as we know it today with the notation “Boundary of 1846.” Upper California extends eastward to the Rio Grande and Oregon Territory to the Continental Divide. The map delineates the Oregon Route (Oregon Trail) in good detail as it winds from the Sweetwater River through South Pass to Oregon City.

Numerous Indian tribes and villages and forts are located. An early depiction of the Great Basin is here called the Great Interior Basin of California.

At lower left is the inset “Map of the Columbia River from the Cascades to the Pacific Ocean” which locates Oregon City, Ft. Vancouver, a mission on the Columbia, Mt. Hood, and Mt. St. Helens with a height of 13, 300 feet.


Samuel Augustus Mitchell

Samuel Augustus Mitchell (1790 – 1868) was an American geographer and bookseller. Mitchell worked as a teacher before turning to publishing geography textbooks and maps. He became involved in geography after teaching and realizing that there were so many poor quality geographical resources available to teachers.

Condition Description

Light soiling and a few tiny edge tears that have been professionally repaired.


Wheat (TMW) #518; Wheat (Gold) #28.

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