I've been looking at the history of Washington, DC in the 1800's for a couple different reasons. One is a writing project I may post about later. Anyhow, I'd like to see this book on the Army Corps of Engineer involvement with DC. I've read a bio of Gen. Montgomery Meigs, who engineered the dC water system, bridges, etc. in the 1850's-60's, and was quartermaster general in the Civil War. Also read Liberty's Cap (I think that's the right title), which deals with the process by which the Capitol Building was given its final dome in the same period. So I've got some idea of what might be involved, but this would be interesting.
Look at the price, though: $61.00. I don't understand it at all. Why doesn't the GPO use print on demand? Looking at Amazon, it appears a number of outfits have scanned old books, and are now selling them as print on demand books for amounts in the range of $15-20.