Subject
- University of Pennsylvania8
- Montgomery, W. W.7
- Powell, John Wesley, 1834-19027
- Sylvester, F.7
- Dana, James Dwight, 1813-18956
- Gold6
- Henry, Joseph, 1797-18786
- Maryland Institute for the Promotion of the Mechanic Arts6
- Nickel6
- Pennsylvania Horticultural Society6
- Private clubs6
- Silver--Assaying6
- Chemistry--Study and teaching5
- Comegys, Joseph P. (Joseph Parsons), 1813-18935
- Delaware Geological Survey5
- Fox, Daniel M. (Daniel Miller), 1819-18905
- Frederick Sylvester & Brother5
- Marvin, J. D.5
- Precious metals--Assaying5
- Religious life5