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Birthday Pi

The Work

Drew's Copy

MathematicsPiMeasurementMusicNumerical Patterns

Acquisition & Provenance

How This Copy Came to the Library

The first in a short series of three books by one of my relatives, Doug Keenan. He recently passed away, so I decided to pick up his books while they are still available. Purchased in August 2026.

About This Copy

This is a 2011 paperback edition of Birthday Pi by Douglas M. Keenan. The book begins with the question, “How many seconds between your birthdays?” and uses it to explore ideas in measurement, mathematics, and music.

Memories & Connections

The first in a short series of three books by one of my relatives, Doug Keenan. He recently passed away, so I decided to pick up his books while they are still available. Purchased in August 2026.

Doug lived an interesting life. He was an electrical engineer, held the patent for the multiband universal remote control, and was a true tinkerer. For example, he was very big into 3D printing. In fact, my Dad used to host makers at his shop in Indy, and Doug’s demonstration of the 3D printers he had built was the first I had seen.

The family lore was that Doug was a mathematical savant of sorts, and he was always fascinated with numbers and, in particular, the pyramids in Egypt. These short books are proof of that passion.

Regretfully, I never got to talk to Doug as an adult. I know we would have had some incredible conversations. From the stories I’ve heard about him, he was definitely someone who questioned the norms of society, and I think he was pretty keenly aware of how a lot of things really worked in truth.

Part of a CollectionDouglas M. Keenan Books

Drew's collection of three short books by his relative Douglas M. Keenan.

Explore the collection
Drew's Copy
Front cover of Drew's copy of Birthday Pi
The front cover of Drew's copy of Birthday Pi by Douglas M. Keenan.
Back cover of Drew's copy of Birthday Pi
The back cover introduces the book's exploration of birthdays, measurement, mathematics, and music.
Copyright page of Drew's copy of Birthday Pi
The copyright page records the 2011 copyright, ISBNs 978-1-4565-7887-9 and 1-4565-7887-1, and CreateSpace printing.