One novel on his list:
The First Men in the Moon, by HG WellsRead about another Moon journey on Mullan's list.
An industrialist, Bedford, and an eccentric scientist, Cavor, travel to the Moon together. The trip is made possible by Cavor's discovery of Cavorite, a substance that negates the effects of gravity. They discover that the Moon has a breathable atmosphere and is inhabited by the Selenites, insect-like aliens living in cities beneath the moon's surface. They turn out not to be friendly...
The First Men in the Moon also appears on Ted Gioia's list of six great moon novels.