Pre-stamped envelopes

Hi all,

I put in Wiki four pre-stamped envelopes reading russian text…
And… as usual… I need some translation…

Vlad, maybe…?

Many thanks by advance.

Michel.

Hi Michel,

First one says: On the 50th anniversary of production of first Soviet small format cameras "FED"
Second one says: "In the halls of the polytechnical museum - Photocamera of company Kodak - early XX century. Moscow"

Vlad

Thanks, Vlad for your kindness.

Sincerly,
Michel