Man︢analand; advertising with camera and rifle through California in Mexico,

Mode of access: Internet.

Mexico as it was and as it is.

Mode of access: Internet.

Check list of the Hemiptera (excepting the Aphididæ, Aleurodidæ and Coccidæ) of American, north of Mexico.

Mode of access: Internet.

List of the Coleoptera of America, north of Mexico /

Bound with: Third supplement to the List of Coleoptera of America, north of Mexico / by Samuel Henshaw, Philadelphia, 1895.