Paul Collins - Banvard's FollyEpisode 4: The Pneumatic UndergroundBBC Radio 4 Extra Duration: 15 minutesFirst broadcast: Thu 5th May 2011, 14:45 on BBC Radio 4 ExtraLatest broadcast: Thu 5th Sep 2013, 14:45 on BBC Radio 4 ExtraAlfred Beach tried to bring pneumatic transit to New York - why did he fail? The stories of forgotten people read by Andrew Sachs.GenresFactualHistorySeriesPaul Collins - Banvard's Folly Source: BBC Online