A pi poem posted on EveAndersson.com is credited to Tom Wilson on June 27, 2002:
   
“There once was a girl who loved pi
I never could quite fathom why
To her it’s a wonder
To me just a number
Its beauty revealed by and by.”
   
       
Wikipedia: Pi
The number π (/paɪ/) is a mathematical constant. It is defined as the ratio of a circle’s circumference to its diameter, and it also has various equivalent definitions. It appears in many formulas in all areas of mathematics and physics· The earliest known use of the Greek letter π to represent the ratio of a circle’s circumference to its diameter was by Welsh mathematician William Jones in 1706. It is approximately equal to 3.14159. It has been represented by the Greek letter “π” since the mid-18th century, and is spelled out as “pi”. It is also referred to as Archimedes’ constant.
       
EveAndersson.com 
Open Mic at the Sacred Grounds Cafe
There once was a girl who loved pi
I never could quite fathom why
To her it’s a wonder
To me just a number
Its beauty revealed by and by
—Tom Wilson
 
EveAndersson.com
June 27, 2002
There once was a girl who loved pi
I never could quite fathom why
To her it’s a wonder
To me just a number
Its beauty revealed by and by
—(June 27, 2002) on Pi Poetry

Twitter
jolly_panda
@jolly_panda
There once was a girl who loved pi
I never could quite fathom why
To her it’s a wonder
To me just a number
Its beauty revealed by and by.
1:46 PM · Mar 14, 2013·Facebook
 
Twitter
Bob Kostic
@causticbob
There once was a girl who loved pi
I never could quite fathom why
To her it’s a wonder
To me just a number
Its beauty revealed by and by.
7:29 AM · Mar 14, 2015·Twitter Web Client
 
Twitter
Bill Helton
@7colonel7
Bumper Sticker…There Once Was a Girl Who Loved Pi…I Never Could Quite Fathom Why.  MyOhMy
12:18 AM · Nov 16, 2016·Twitter Web Client

Google Books
Reflections on Contemporary Life: An Outsider’s Perspective
By Reza Noubary
Bloomington, IN: Archway Publishing
2019
Pg. ?:
There once was a girl who loved pi
I never could quite fathom why
To her it’s a wonder
To me just a number
Its beauty revealed by and by.
—Eve Anderson
 
Twitter
Bob Kostic
@causticbob
There once was a girl who loved pi
I never could quite fathom why
To her it’s a wonder
To me just a number
Its beauty revealed by and by.
7:43 PM · Mar 14, 2021·Twitter Web App