An attached mailing label reads: "From B. Shinberg, Gilbert Shoe Co., 151 Essex St., Haverhill, Mass." An included note indicates that that these were wedding slippers worn by a Mrs. Davis of Cambridge, MA around 1830. Shape of heel and toe suggest that the 1830 date is appropriate. White slipper/shoes such as this were typically used at weddings. The very slight wear corroborates this use.
Delicate slippers such as these were used by ladies in the early Victorian period with fashionable dress. These tied on to the ankle, much as some ballet shoes do today. These types of shoes were notoriously unhealthy-- they quickly became damp and soiled, provided no foot support, and were occasionally purchased a size or two too small so that thewearer's foot appeared dainty. It was all about looking great; women were not expected to be comfortable or accommodated by their dress.