Stereo analysis
AnalyzedVerdict
Genuine stereo pair97%
The two photographs contain the viewpoint difference needed to produce genuine depth.
- Depth spread
- 5px
- The range of horizontal difference between the two views. More spread generally means more depth; 0–1 px usually indicates a monoview.
- Match
- 100%
- The share of usable picture detail that can be matched between the left and right views. A higher number means a more reliable comparison.
- Vertical
- 3px
- Vertical drift between matched details. Lower is better; 4 px or more can indicate camera movement, scan skew, or poor alignment.
Two arched-top photographs look into a narrow river gorge, where water drops between projecting ledges before spreading across the foreground. Closely layered rock walls dominate both sides of the view, with conifers growing along the rim. The pale, softly rendered water contrasts with the sharply defined stone; no people are visible.
The yellow mount reads “Vicinity of Quebec, Canada.” at left and “American Scenery.” at right. On the reverse, beneath the heading “Vicinity of Quebec,” catalogue entry 120 is underlined. Its ditto marks carry down the title “Natural Steps—River above the Falls,” with the variant letter C. The adjoining entries for “Montmorenci Falls” support identifying the setting as the Natural Steps on the Montmorency River above the falls.
This is view C within a six-view Natural Steps sequence, numbered 118–123 and lettered A–F. The immediate neighbors are no. 119, view B, and no. 121, view D, of the same subject. No separate number is securely legible within the front photographs; the identification rests on the marked reverse entry and the corresponding landscape. Neither scan supplies a photographer’s name or a date.
The card measures 6.93 × 3.46 inches (176.1 × 87.9 mm), as supplied by the owner. Clean and sound overall, with both photographs and the printed reverse intact.
- Title on card
- No. 120. Natural Steps—River above the Falls. C
- Medium
- Stereoview
- Subject
- Outdoor Scene, Yellow Mount
- Dimensions
- 6.93 × 3.46 in (176.1 × 87.9 mm)
- Condition
- Clean and sound overall, with good detail in both photographs and an intact, legible printed reverse. No significant cracks, losses, or strong staining are visible.
- Catalogue no.
- MSV1780
Catalogue details
Location
Natural Steps, Montmorency River above the falls, Quebec, Canada · Québec, Canada
Photographed subject · Exact site · 80% confidence
Card names the Natural Steps on the Montmorency River. Les Marches-Naturelles ledges upstream of the falls (OSM: Barrage des Marches-Naturelles). Corrected from regional point 47.2302,-71.1496.
Source: Card caption / imprint (direct)








