In what's being called a "cross-country battle of the libraries," the fine folks at San Francisco Public Library have placed a bet with the Enoch Pratt Free Library in Baltimore. Both of them involving reciting poems dedicated to the other city. Both of them involve library types wearing jerseys. We love it. So will you. Here are the details:

If the 49ers win on Sunday (which, let's face it, they will), Pratt Library CEO Carla Hayden must recite George Sterling's iconic San Francisco poem, “The Cool, Grey City of Love” in Baltimore’s Central Library Main Hall while wearing a 49ers jersey.

If the Ravens win (which, how adorable), the San Francisco city librarian Luis Herrera will have to recite Edgar Allan Poe's "The Raven" in the atrium of the San Francisco Main Library wearing a Ravens jersey.

"We are confident about the Niners victory on Sunday and we sure hope Dr. Hayden looks good in red and gold," chirped Herrera. "As a huge sports fan, I am thrilled to support our football team while spotlighting two great library systems and two great literary cities."

To give Hayden a jumpstart, here's the poem she needs to learn by Monday:

"The Cool, Grey City of Love"

Tho I die on a distant strand,
And they give me a grave in that land,
Yet carry me back to my own city!
Carry me back to her grace and pity!
For I think I could not rest
Afar from her mighty breast.
She is fairer than others are
Whom they sing the beauty of.
Her heart is a song and a star--
My cool, grey city of love.

Tho they tear the rose from her brow,
To her is ever my vow;
Ever to her I give my duty--
First in rapture and first in beauty,
Wayward, passionate, brave,
Glad of the life God gave.
The sea-winds are her kiss,
And the sea-gull is her dove.
Cleanly and strong she is--
My cool, grey city of love.

The winds of the Future wait
At the iron walls of her Gate,
And the western ocean breaks in thunder,
And the western stars go slowly under,
And her gaze is ever West
In the dream of her young unrest.
Her sea is a voice that calls,
And her star a voice above,
And her wind a voice on her walls--
My cool, grey city of love.

Tho they stay her feet at the dance,
In her is the far romance.
Under the rain of winter falling,
Vine and rose will await recalling.
Tho the dark be cold and blind,
Yet her sea-fog's touch is kind,
And her mightier caress
Is joy and the pain thereof;
And great is thy tenderness,
O cool, grey city of love!