I collected picture covers of sheet music with gambling and playing card themes. I just recalled this one, which has socialistic and religious implications in a deck of cards (see the picture below):

1916 sheet music. A Pack of Cards. Interesting poker-related lyrics -- about rank of social classes, hints of progressive socialism and equality, discarding low cards in draw poker, playing-card faces and backs, and religion and judgement day. (I don't own this sheet music.) Here are the lyrics:

There's that about a Pack of Cards
Which somehow calls to mind
The so-called "social classes,"
Or "divisions" of mankind;

Some folks are "high" and some are "low"
And some of "medium grade,"
According to the surface marks
Which circumstance has made;

The King, the Queen, the Jack,
the Ten, "Aristocrats" Elite --
The "Upper crust," who hold in trust
The bread the rest must eat;

The Six, the Seven, the Eight, the Nine, --
The happy Middle Class, --
They're just below the Magnates,
But above the Struggling Mass;

The Deuce, the Trey, the Four, the Five, --
Discarded everywhere, --
For bare existence forced to strive, --
(It doesn't seem quite fair!)

And yet the Ace recalls the ONE
Who watches over all
And marks with just and equal eye,
HIS subjects rise and fall;

And in the Court of Last Appeal,
Adjusting every claim
He sees the backs of all the cards, --
BEHOLD, THEY'RE ALL THE SAME

Robert

some more covers here:
http://www.antiquegamblingchips.com/songsheets.htm