On Halloween go upstairs backwards, eating a hard boiled egg without salt, and looking in the glass. You will see your future husband in the glass, looking over your shoulder.
St. John, N. B.

On Halloween go upstairs backwards, eating a hard boiled egg without salt, and looking in the glass. You will see your future husband in the glass, looking over your shoulder.
Source: Current Superstitions (1896), entry 312.
Fanny D. Bergen, editor.
Modern normalized navigation; the historical attribution above remains unchanged.