Fred Fuller was an Aviation Machinist Mate aboard USS Colorado during the Earhart search. His son contacted me to say he has a chart his father drew depicting the search (attached below). It shows a landing at Hull, which is correct, and implies a landing at Sydney, which is not correct. The chart seems to be based mostly on scuttlebutt.
His son also has a note given to him by one of the pilots as a souvenir. It says,
YECR V 54D BT
"Have sighted Sydney will reel up in ten minutes and drop down to inspect 0742”
Have no idea what the YECR V 54D BT means, but the message itself seems clear and pretty interesting. The Colorado's planes couldn't communicate with each other except by hand signals, but at least one of the three planes (probably Senior Aviator Lambrecht's) was equipped with an LF transmitter and a trailing wire antenna for sending Morse code back to the ship. This appears to be a note passed by the pilot of one of the search planes to the radio operator in the back seat for transmission to the ship's radio operator.
Just before 7AM on Saturday July 10, the three O3U-3s were launched to search Sydney Island. I interpret the message to mean 42 minutes later they had Sydney in sight about ten minutes up ahead. They had to reel in the trailing wire before they could drop down to inspect the island, but that meant they could not make real-time reports back to the ship during the inspection.