Cover art for Wagner's opera Tristan und Isolde. 
Source: Gutenberg.org

The image is a black and white line drawing.

Across the top is an ornate filigree with a scrolled banner reading "GRAND OPERA LIBRETTOS."  Two smaller scrolls flank each side of the banner.

Beneath the banner is an arched filigree.  Inside this area are the words
"GERMAN
AND ENGLISH TEXT
AND MUSIC OF THE LEADING MOTIVES"
followed in German by the title "TRISTAN UND ISOLDE." In parentheses beneath the German title is the English translation "Tristan and Isolde."

Beneath that appears
"BY
WAGNER"

The lower sides of the arch are coverd by decorative ferns.  Across the bottom of the arch is another scrolled banner containing the publisher's name and location
"OLIVER DITSON COMPANY
BOSTON"

Two smaller scrolls appear to the left and right.  On the right the scroll says "CHAS-H-DITSON & CO" followed underneath in italics by "New York."

The scroll on the right says "LYON & HEALY" followed underneath in italics by "Chicago."

Across the bottom of the playbill is the edge of the stage with stage lights.  At the center are two stylized masks with a lyre and crossed swords between them.  The mask on the right is smiling, mouth wide.  The mask on the left is frowning, mouth wide.  Both masks sport head bands with dangling ribbons on the sides.