The second one is quite easy - L5 with some missing holes.
Libby, McNeil & Libby - Chicago, IL

I haven't found the first one, but just as an idea:
In Europe there are many numeral perforations found on stamps, when people sent their Kodak films in to be developed. In the factory the envelopes got a unique processing number, and sometimes the employees perforated the stamps as well. I don't know if that was common in the States, too.