You might have to search a bit in the park-like wooded lawn in front of Seminary Hall on the NSU campus to find these interesting pillars. They are made of brick taken from the original buildings of the Cherokee National Male Seminary (1851-1910) and the Cherokee National Female Seminary (1851-1887). The old buildings stood in Park Hill, about three miles south of the current campus.
Three intact brick pillars still remain in Park Hill and have been incorporated into the design of the Cherokee Heritage Center there. When the Cherokee National Female Seminary opened in 1851, it became the first institution of higher learning for women west of the Mississippi River.
This Masonic Lodge, a stone structure standing on the street behind the Old Tahlequah Jail marks the spot of the first Masonic Lodge in the Indian Territory of Oklahoma. The lodge was established in 1848, and first met in the Cherokee National Supreme Court Building. This old lodge building dates back to 1939.
I am not a Mason and have no first hand knowledge of this secret society. However, it's interesting to realize that the Masons were established among the Cherokees of the 19th century, which is just another indication of the ways in which they had already been influenced by the white man's ways and adapted the white man's institutions.
Today the old lodge building is occupied by the Cookson Hills Community Action, a social organization dedicated to eliminating poverty.