Sidney's own title inscribed at the lower margin: "Mississippi Landscape" — confirmed in both the painting and the spreadsheet. At 5" × 7", this is a small format card-like work, yet it achieves remarkable completeness within its modest dimensions.
A single large tree dominates the lower half of the composition — a broad-canopied deciduous tree rendered in Sidney's most energetic tree-painting manner, the foliage built up in multiple blue-green and dark green passages that overlap and create genuine depth within the crown. The trunk is dark, simple, vertical — a firm anchor below the loose cloud of foliage. Behind and beside the tree, smaller vegetation and a distance view of yellow fields and rolling green hills establish the Mississippi landscape setting.
The sky above is painted with the same dotted, stippled technique visible in the upper part of the tree crown — not the smooth washes of the mountain works but a built-up texture of small marks that creates a sky of considerable visual energy. Deep blue at the top, transitioning through lighter blues and whites, with pink passages at the horizon suggesting either morning or evening light.
As a confirmed titled work locating Sidney in Mississippi, this is biographically interesting — it establishes his presence in the Mississippi landscape at some point in his life. The confident, economical handling suggests a painter who has painted landscapes like this many times, who knows immediately how to read this terrain and translate it.