In Alexander Thomson, the viewer is presented with a striking portrait of a man dressed in formal attire. The color palette features rich, deep tones, emphasizing the subject's dignified presence. The background is subtly blurred, drawing attention to the figure's facial features and expression.

The use of light highlights the texture of the fabric and the contours of the face, creating a sense of depth. This painting is executed in oil on canvas, showcasing Frederic Edwin Church's skill in portraiture. The dimensions are approximately 76 x 102 cm, making it a sizable work that commands attention. The brushwork is meticulous, particularly in the rendering of the clothing and the facial details.

The overall composition is balanced, with the figure positioned centrally against a muted backdrop. Frederic Edwin Church was a prominent figure in the Hudson River School, known for his landscapes and portraits. Alexander Thomson reflects Church's ability to capture not just likeness but also the character of his subjects. An interesting fact about this work is that it was commissioned by Thomson's family, highlighting the personal connection between the artist and the subject.

This portrait stands as a testament to the artistic trends of the 19th century, blending realism with romantic ideals.