Observations on the Factory System (Classic Reprint)

Some Observations on the Militia System (Classic Reprint)

Observations on the Rare Earths (Classic Reprint)

Observations on the Medical Character (Classic Reprint)

Some Observations on the Organization, Functions (Classic Reprint)

Observations on the Education of Children (Classic Reprint)

Observations on the Isthmus of Panama (Classic Reprint)

Observations on the Mosaic Disease of Tobacco (Classic Reprint)