sentences:  Waldo spent many summers in the Cascade Range fostering an appreciation for the natural environment, which led to conservation efforts to preserve the range and later to the naming of several natural features after Waldo, notably Waldo Lake.Waldo was born in 1844 in Oregon to parents who immigrated to Oregon Country from Missouri via the Oregon Trail in 1843.The family settled near Salem in an area now known as the Waldo Hills in the Willamette Valley.