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Envelopes http://adoptiontanzania.org/tag/youtube/
Print Envelopes http://www.macmillanonline.net/Pets-Animals-Sites.php
A printing company can offer to print the brochure in 5.5 x 11, 8.5x11, 8.5x14, 11x17, 11x25.375. Aside from 8.5x11, these standard sizes can be used to help you stand out. Have them folded in different ways to get more variety.