Robert B. (Robert Barclay) Miller

Robert B. Miller, also listed as Robert Barclay Miller, is credited as the compiler of Forest Trees of Illinois: How to Know Them, a pocket manual published by the Illinois Department of Conservation. Library records identify him as a former State Forester in Illinois, and a later Illinois Natural History Survey bulletin describes him as Chief Forester in the Department of Conservation.

His best-known work focused on helping readers recognize the most important characteristics of Illinois tree species in a compact, practical format. That straightforward approach made the book useful not just for specialists, but also for students, landowners, and general readers interested in forestry and conservation.

Confirmed biographical detail beyond his professional forestry roles is limited in the sources I found, so much of his life remains hard to reconstruct with confidence. Even so, the surviving records show a writer closely tied to public education about trees, forests, and the natural landscape of Illinois.