Cool photos!
Where did you come across them?
The first Airplane is a Douglas DC-2 It "may" be the same airplane that is the last of her kind flying in the world.
N1934D
http://www.airport-data.com/aircraft/N1934D.html
It is the only DC-2 that I can find, after doing quick on-line search, that was associated with Aviateca.
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The second looks to be a Ford Tri-motor.
N414H is associated with Aviateca as well...it still flies too!
http://www.airport-data.com/aircraft/N414H.html
Aviateca is listed in this site as owning both of those airplanes...
http://www.goldenyears.ukf.net/reg_LG-.htm