I buy manila coin envelopes from Staples office supply store and I know they do on-line orders. I'm fortunate that we have one a couple miles from our home.

The envelopes come in different sizes...the smallest, which are about half the size of actual seed envelopes, work great for most seeds and for sharing seed with others. They sell them in boxes of about 250 if I remember correctly. Mine also were not self adhesive.

As far as labels...I print my own labels off the computer to put on the back side of the envelopes which helps to keep them closed should you get a batch with inadequate glue and adds a nice cosmetic touch to the finished product.

I'm sure there are a lot of other sources out there. I recommend doing a web search (Google or other). Hope this hhelps and good luck!

thank you very much

Seed Savers Exchange offers several types of envelopes; heat-seal foil for long-term storage, and self-sealing paper for seed swapping. The paper types come either blank, or pre-printed with generic info on many popular seeds (beans, radish, marigold, etc.). Link follows.

If you prefer similar blank envelopes, or are looking for bulk rates, you can also try Southern Exposure Seed Exchange, which carries both foil and paper in several types & quantities.

Here is a link that might be useful: Seed saving envelopes

I have vintage seed envelopes in excellent condition, at least 25 years old, printed for "Allen, Sterling & Lothrop" of Falmouth Maine. I will never use them all so I'm selling them at 15 cents each envelope. They can be used for seeds or artistic endeavors (I've sold some to artists using them for mobiles and vegetable decor). Pictures can be seen at
http://www.flickr.com/photos/25947181@N03/

Envelopes are for: Ageratum, Alyssum, Aster, Beans, Borage, Chrysanthemum, Cress, Cucumber, Delphinium, Endive, Fennel, Foxglove, Gypsophila, Lettuce, Marigold, Morning Glory, Pansy, Petunia, Popcorn, Poppy, Primrose, Radish, Salvia, Squash, Sunflower, Sweet William, Tomato, Zinnia

Here is a link that might be useful: Janes Garden