Two 1942 covers to the US with the 15c Columbus stamp

Both covers are, expectedly, censored.

Two 1942 covers to the US, one with a rare censorship mark

 A common usage: the 1 peso with a 15c small format cattle stamp (15cSC). The first cover has a very rare small censorhip mark, not quite noticeable, lower left over the company logo 'Suchard.'

This second cover has standard censorship tape.

Two 1942 covers to the US used with commemoratives

The first letter has a note for the censor, "written in Spanish."

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The second letter was sent Via Panagra, and was sent to an organization helping Jewish immigrants fleeing the war in Europe.

https://www.wikiwand.com/en/Jewish_Transmigration_Bureau

Two 1942 covers to Europe

The first cover is to France via Natal, South Africa. It was sent to Vence, North of Nice. The cover not having any censorship markings may indicate that it did not travel via any routes monitored by Germany, England, or the United States. During years when almost all covers were censored, the uncensored cover is the most interesting one. 

This cover was sent to England, and IS censored.

Two 1942 covers with the Roca Commemorative

This first cover, to the US, does not have any route information.

The second cover went to England via New York.

Four 1942 covers to the US bearing the 2 pesos stamp

All are censored, as expected. The first went Via Panagra, Pacific Ocean route.

These three don't have any specific air route markings.

Three 1942 covers to the US bearing 2 pesos stamps

 All are censored, as expected. The first one is 'by first airplane.'

Both of these are Via Panagra

There is some plate wear in various places along the country legend for this 2 pesos stamp.

Recently Acquired Departmental Officials: 30c and 50c

 The group had a single 30c, a 1E1, which is relatively common. Some of there were also printed on the 1E2 paper.

And then there are the scarcest departmentals, even harder to find than the 1pL values, the 50c, always 1E1.