On some additional or imperfectly understood fossils from the Hamilton Formation of Ontario, with a revised list of the species therefrom. - 1891
On some additional or imperfectly understood fossils from the Hamilton Formation of Ontario, with a revised list of the species therefrom. - 1892
On some additional or imperfectly understood fossils from the Hamilton Formation of Ontario, with a revised list of the species therefrom. - 1898