""The Rio Grande Gold Gravels: Report Of The Newly Discovered Auriferous Gravels Of The Upper Rio Grande Del Norte"" is a book written by Benjamin Silliman and published in 1880. The book provides a detailed report on the discovery of gold in the Rio Grande Del Norte region and the geological features of the area. Silliman, a renowned geologist and professor at Yale University, presents his findings on the newly discovered auriferous gravels of the...