They were on the eighty-sixth floor of a building which was probably the most pretentious skyscraper in the city. (Dust Of Death)

Above them towered the stone and steel monolith that housed Doc Savage's eighty-sixth floor aërie. (Dust Of Death)

THEY were now in Doc Savage's great library. This room, with other offices and perhaps the world's most completely equipped laboratory were on the eighty-sixth floor of lower Manhattan's most impressive skyscraper. (Haunted Ocean)

The bronze man backtracked, with the pig following, reached the other side of the building and entered what seemed to be an innocent freight entrance into which trucks could be backed. It was really the exit from his private basement garage, and he walked down the runway, traversed a passage and took his private elevator to his eighty-sixth floor quarters. (The Midas Men)

They took Doc's private elevator to the eighty-sixth floor, stepped out into the severely plain modernistic corridor and approached the metal door entering into Doc's headquarters. (The Midas Men)

On the eighty-sixth floor of a New York City skyscraper, within a great paneled room, the walls of which were lined with high bookcases, two figures stood tensely before a modern short-wave radio set that was on a table. (Hex)

THE offices of Clark Savage, Jr., were on the eighty-sixth floor of one of New York's tallest skyscrapers. In fact, they occupied the entire floor space at that level. (The Headless Men)

The cage left the eighty-sixth floor with such breath-taking speed that occupants felt as though they were suspended in midair and falling without any break. (Mad Eyes)

Doc Savage's headquarters covered the entire eighty-sixth floor of one of Manhattan's most impressive skyscrapers. Doc's famous laboratory, his great library of scientific volumes and his other devices, were housed under a tower of stone and steel. (Mad Eyes)

"Sure," said Doc. "Next time! We're on the eighty-sixth floor, and it's quite common to be shot at here!" (The Man of Bronze)

...the bronze man put the plane down in front of the big hangar-it was disguised as a warehouse-which he maintained on the Hudson water front, and which connected with his skyscraper headquarters by an underground pneumatic tube with cars in it which men could ride. (The Deadly Dwarf)

Headquarters consisted of three rooms, one of which, the reception room, was quite small. The library was larger, and contained a remarkable collection of scientific books. The remainder of the eighty-sixth floor, more than two thirds of it, was given over to the experimental and manufacturing laboratory. (The Devils' Black Rock)