Very Rare Vintage Drum Slingerland Radio King Gene Krupa 'Science of Drumming'

"The Science of Drumming"
Books 1&2 -Superb Condition
Book 1 48 pages
Book 2 46 pages
First published 1946.
Now 'Out of Print'for decades. These books are sought after by
jazz drummers and Krupa fans alike and are rare, especially in this
Book 1 Like new
Book 2 Has minor wear to the front and back covers and spine.
Every single page in both books is in pristine condition, with no ink
or pencil marks, stains, blemishes or signs of wear and tear of any kind.
These books should not be confused with "Gene Krupa Drum Method"
which is an entirely different publication.