Index Langdon, John 4 committees, RTP3 108 119n.2 122n.1 131n.1 1 identified, RTP3 109n.4 1 return to Philadelphia, RTP3 143 1 seeks RTP’s patronage, RTP3 222 1 appointed congressional agent, RTP3 283 1 letter from: Robert R. Livingston, RTP3 118–119 RTP3 168