"The Queen's Canopy over Lost River, Formation over 60 feet in height. Onondaga Cave -- Leasburg, Missouri. A trip in the cave includes subterranean boat ride on Lost River shown in the picture. Onondaga is located on State Highway six miles from its intersection with U.S. Highway 66 between Bourbon and Cuba, Missouri. New management offers use of more than five hundred acres of woodland, magnificent frontage of Meramec, natural air-conditioned rooms, refurnished cabins, tea room wild flower and song bir sanctuary, picnic and camp sites, swimming." One-Cent Post Card No. 3B-H758.