Olympic Swimming History Question

I did a considerable amount of research on NYC swimming history when putting together a bid to operate a pool in Queens. In the early 1900's many swimmers did train in the Hudson and other bodies of water in the area, though not exclusively they also swam in pools--namely Olympians Charlie Daniels, David Bratton, and David Hesser. One of the more vexing items that I've seen re-printed many times is the stat that Gertrude Ederle broke 7 World Records in one afternoon in 1922 at Brighton Beach in one 500 meter swim. I have never found any back up to this and having been out there many times with my swimmers we are confounded on just what she did--swim buoy to buoy? It certainly isn't pier to pier that's a half mile. And what 7 records were broken during the same swim? 100, 200, 220, 400? Which leads to the assumption that they counted record swims in the open water (actually ocean). This may be something for Geochuck and Frank Thompson to decipher.

I did a considerable amount of research on NYC swimming history when putting together a bid to operate a pool in Queens. In the early 1900's many swimmers did train in the Hudson and other bodies of water in the area, though not exclusively they also swam in pools--namely Olympians Charlie Daniels, David Bratton, and David Hesser. One of the more vexing items that I've seen re-printed many times is the stat that Gertrude Ederle broke 7 World Records in one afternoon in 1922 at Brighton Beach in one 500 meter swim. I have never found any back up to this and having been out there many times with my swimmers we are confounded on just what she did--swim buoy to buoy? It certainly isn't pier to pier that's a half mile. And what 7 records were broken during the same swim? 100, 200, 220, 400? Which leads to the assumption that they counted record swims in the open water (actually ocean). This may be something for Geochuck and Frank Thompson to decipher.