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authorisabelle-dr2022-03-22 19:10:07 -0400
committerisabelle-dr2022-03-22 19:10:07 -0400
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-# GTFS-books \ No newline at end of file
+# GTFS-books
+
+This repository contains the source for the following two books:
+
+* The Definitive Guide to GTFS (2014)
+* The Definitive Guide to GTFS-realtime (2015)
+
+These were originally published commercially, but have now been donated to OpenMobilityData.
+
+Some of the content may be outdated. You are encouraged to contribute any fixes or changes in order to keep it as up-to-date as possible.
+