Shown on an Argentine government chart in 1953, but not named.

The island was shown on an Argentine government chart of 1950.

It was shown on an Argentine government chart of 1950.

It was shown on an Argentine government chart in 1953, but not named.

It was first shown on an Argentine government chart in 1957.

They were shown on an Argentine government chart of 1950, but not named.

They were shown on an Argentine government chart in 1953, but not named.

It was shown on an Argentine government chart of 1952, but not named.

The name appears on an Argentine government chart of 1954.

The island is shown on an Argentine government chart of 1952.