What is the last name of the couple that bought the two massive concrete chairs at the auction?  Answer the above question based on the context below:  Discussion of damming the White River for flood control began in the 1930s, and the U.S. Army Corps of Engineers (CoE) held hearings on building a dam in January 1946. The new dam would create a lake 50 miles (80 km) long, and one arm would extend to Monte Ne. Work on Beaver Dam began in 1960 as the CoE impounded and bought land around the White River. In July 1962, Mary Powell sold Camp Joyzelle to the CoE, and W. T. McWhorten sold his land as well. The Federal Government required that all cemeteries and burial grounds be moved. This included the Harvey tomb, and it was no easy task. In 1962 contractor Harald Mathis of Springdale took nine days to raze the 40-ton tomb and one to move it. The first attempt broke a flatbed truck. Another contractor from Huntsville with a stronger truck then had to be called in. A new road was laid to the new site of Harvey's tomb. The tomb was placed on the crest of a hill donated by Harvey's longtime friends and neighbors Mr. and Mrs. Kenneth Doescher. Today, the tomb sits on private property visible from the Monte Ne boat launch on Beaver Lake. Relocation of the aging tomb put pressure on it, causing it to crack.The CoE mistakenly believed that the waters of Beaver Lake would cover the area of the large hotels, so those parcels were added to the land they purchased for the project. Dallas Barrack, who owned Oklahoma Row, felt that he had been treated poorly and had received much less than his property was worth. The CoE held a sealed-bid auction and J. G. Gladdens purchased what was left of Missouri and Oklahoma Rows. He planned to move the remnants of Oklahoma Row out of the path of the rising lake waters. In order to do this, it was first necessary to remove the log portion or shell of the hotel. The original windows and doors were dismantled for the move and later reinstalled. The fireplaces, as well as all of the major stonework were later torn down. Also sold at auction were two massive concrete chairs that had been at the base of the amphitheater. They were bought by...
Rose