To this day, this remains Key West’s largest residential pool. $20,000 in 1938 is equivalent to more than $420,000 in today money.
Said penny, referenced in the attached.
Straight up cut and paste:
One of the more stunning and unusual features of the Hemingway Home property is the in-ground swimming pool, an extraordinary luxury for a residential home in 1930s Key West. The final cost of construction in 1938 dollars was $20,000. Even more mind-boggling is the sheer labor of digging, in solid coral, a massive hole 24 feet wide, 60 feet long, 10 feet deep at the south end, and 5 feet deep at the north end. The Hemingway pool—the only one within 100 miles in the 1930s—was truly an architectural feat.
Few people know that, despite his protestations concerning the expense, it was Ernest Hemingway himself who planned the pool. His travels as a war correspondent during the Spanish Civil War, however, left oversight of the project to Pauline, and it was she who supervised the pool’s construction during 1937-1938.
And Ernest did complain mightily about the growing expenses of construction costs. Indeed, tourists who visit the property today are treated to humorous story of Hemingway, purportedly exasperated at the expense of the venture, flinging down a penny on the half-built flagstone pool patio and bellowing, “Pauline, you’ve spent all but my last penny, so you might as well have that!” Whether the story is apocryphal or not, there is a penny embedded in cement at the north end of the pool to memorialize Ernest’s purported outburst.
The pool has a mammoth 80,784 gallon capacity, and at the time of installation there was no fresh running water in Key West. Fresh rain water was collected through the gutters on the soffits of home roofs and drained into underground enclosed reservoirs called “cisterns,” but this provided only enough fresh water for home use—certainly not a sufficient supply water for such an immense pool.
Accordingly, in 1938, pool construction involved drilling down to the salt-water table and installing a water pump to retrieve salt water to fill the pool.