A.H. Holloman House (421 N. 12th Street, Frederick, Oklahoma)
In the Holloman home was once a collection of fossils and stone implements taken from the Holloman Gravel Pit, which was located north of Frederick. Below is a newspaper article from The Stanford Daily on January 18th, 1929:

Below is an excerpt from the article titled “The Antiquity of Man in America” by J.D. Figgins, published in Natural History Magazine on September 16th, 1929:
Having read an article dealing with the question of man’s antiquity in America by Mr. Harold J. Cook, which appeared in the November, 1926, issue of the Scientific American, Dr. F. G. Priestly of Frederick, Tillman County, Oklahoma, wrote Mr. A. G. Ingalls, editor of that publication, briefly describing the finding of artifacts associated with fossil mammal remains in that vicinity. After some correspondence, and with Doctor Priestly’s consent, Mr. Ingalls forwarded this letter to Mr. Cook. Doctor Priestly’s account of these discoveries was of such a convincing nature that it could not be doubted that the Oklahoma material was of great importance. With the view of making studies of both the material and physical character of the deposits from which it was taken, Mr. Cook and the present writer joined Doctor Priestly at Frederick in January.
It was at once apparent that while Doctor Priestly recognized and understood the importance of the finds he described in his letter to Mr. Ingalls, it was equally obvious he had followed a very conservative course and the writer was not prepared for the discovery that in addition to the artifact mentioned, several others had been unearthed and no less than five of them preserved.
In his account of these finds, Doctor Priestly stated all had been personally made by Mr. A. H. Holloman, who owns and operates a sand and gravel pit about one mile north of the city of Frederick. To Mr. Holloman, therefore, the writer is indebted for a history of the discoveries, their stratigraphic position, and other items having a bearing on them.
As Mr. Cook’s account will cover the geological history of these deposits, and the immediate vicinity, here it is necessary merely to say the sand and gravel pit consists of an open cut on the east face of a ridge approximately half a mile in width and running for some miles in a generally north and south direction. Sand and gravel from an area of about two acres have been worked out near the crest of this ridge, which, with the overlying stratum of clay, silt, etc., varied from ten feet to twenty-five feet in thickness. At the time of our visit, a nearly vertical cut of not less than 150 yards in length and varying from fifteen feet to twenty-four feet in height was exposed, in which every phase of the several strata was clearly defined.
Independent of the opportunities thus offered for studies of the exposed formations, it also made it easily possible for Mr. Holloman to point out the horizons at which artifacts and the several varieties of fossils had been found. That a great deal of fossil material has been uncovered since the opening of the pit, there can be no doubt, but not until during the past year was an effort made to preserve any part of it. Accounts are unanimous in showing that quantities of such material have gone into the refuse heap, now comprising thousands of tons; into the surfacing of roads; the cement mixer, etc. Seven known artifacts are buried somewhere in this refuse pile or carried away: a metate and six pestles or manos, but these cannot be considered here. (The Colorado Museum of Natural History has arranged to keep a representative constantly on the ground to search for and preserve all artifacts and fossils hereafter uncovered.)
Although fossils are found throughout the entire stratum of sand and gravel deposits, a superficial study of all the evidence suggests the possibility that two faunal and cultural stages are represented.
In an abstract published in the Academy of Science for 1930, O.F. Evans of the University of Oklahoma concluded that “This deposit contained the Cretaceous and Tertiary fossils now found in the Holloman pit, while the arrow heads and metates were on the surface where they had been left a comparatively short time before,”. The entire abstract is available with this link: Probable history of the Holloman Gravel Pit 1930
Site of Holloman Gravel Pit (0.3 mile west of U.S. 183 on Highview Avenue)
The pit covers three acres, but the formation is far more extensive. Here have been found clay balls inside of which, say local reporters, were living frogs. Bones of prehistoric animals and stone age implements have also been taken from the pit. Because of all of the controversy about this site in the scientific community, Mr. Holloman decided to close it to researchers, and little has been said about it in scientific circles after that.