[quote="_april"]so im sending out one 4x6 picture, a LOR, a 5x7 return envelope inside of a slightly larger envelope. How many liberty stamps would i need on the outer envelope and return envelope. They are staying within the USA as well.[/quote]
You should only need one stamp.

As long as the outer envelope is not bigger than 8X10, everything should weigh under an ounce which is 0.42, one stamp.

Hope this helps! Feel free to pm me if you need more help. {up}

BossC

I think it's best to just add 3 stamps :)

-Selenaanddemifan

That seems like it'd be just 1 oz. of weight, which is $1, so it's best if you add 3 stamps or 2 stamps and a 17 cent stamp. For the return envelope, you just put one stamp on it.

Hi,
I'm not American, but I think yhat this link can be helpful:
http://postcalc.usps.gov/
have a nice day!

so im sending out one 4x6 picture, a LOR, a 5x7 return envelope inside of a slightly larger envelope. How many liberty stamps would i need on the outer envelope and return envelope. They are staying within the USA as well.