From trash poem to welcome sign

Let no one say, and say it to your shame,
That all was beauty here, until you came.

A sign bearing these lines stand in Upper Manhattan's Fort Tyrone Park. They are beautiful, aren't they? asks a visitor as she finds the words to be poetic: they make her feel wanted.

She is then on a mission to track down the source of these lines. Upon Googling nothing shows up. The lines are then discovered to be fragments, carefully chiseled out of a longer early 20th-century poem:

Friend,
When you stray or sit and take your ease
On heath or hill, or under spreading trees,
Pray leave no traces of your wayside meal,
No paper bag, no scattered orange peel,
Nor daily journal littered on the grass;
Others may view these with distaste, and pass;
Let no one say, and say it to your shame,
That all was beauty here until you came.

This isn't a poem of sweet cajoling, but one with a scolding attitude, "grumpy lines" as the visitor calls them. The history of the poem is part of the burgeoning history of trash and trash talk in post-World War I Britain, a time when, liberated by rising economic fortunes and goaded by a desire to cultivate leisure, members of the British working and middle classes took to traveling from the cities to the countryside either in motor cars or on bicycles. The countryside, for so long a pristine habitat reserved for the ruminating walks of the upper class, was seen to be everybody's public space then.

Forced to contend with the despoiling of the countryside, the elite began to express deep chagrin about the litter that the lumpen visitors tended to leave behind.

In his book Landscape and Englishness, David Matless records the backlash against the new tourism which really was a backlash against the violation or a "flagrant breach of the national good form."

So, in short, the two lines that comfort the modern visitor to the Manhattan Park is in essence clipped from a longer trash poem that in class-conscious Britain had issued moral caveats.