78 rpm records
Subject Source: Art & Architecture ThesaurusScope Note: Phonograph records played at 78 revolutions-per-minute, the standard playing speed for records until the mid-20th century. The maximum length of play per side was 4 1/2 minutes, and they appeared most commonly in ten-inch and twelve-inch formats.
Found in 1 Collection or Record:
Collection — Box 1: 
Identifier: MSS 2323