![](/docs/historical/frbsl_history/media/13-0104.jpg)
Pneumatic Tube Mailing System [Photograph], . https://fraser.stlouisfed.org/archival/5182/item/527338, accessed on August 30, 2024.
Pneumatic Tube Mailing System [Photograph], . https://fraser.stlouisfed.org/archival/5182/item/527338, accessed on August 30, 2024.