Gabbros and Associated Rocks at Preston, ConnecticutGerald Francis Loughlin · First published 1912 · Latest edition 2023Open the Tome
Geology and Ore Deposits of the Tintic Mining District, Utah, Issues 107-108Waldemar Lindgren, Gerald Francis Loughlin, Victor Conrad Heikes · First published 2023Open the Tome
Contributions to economic geologyGerald Francis Loughlin, Geological Survey (U.S.) · First published 1930Open the Tome
The oxidized zinc ores of Leadville, ColoradoGerald Francis Loughlin · First published 1918Open the Tome
