请留意附在下面的签名。
I request your attention to his signature, appended below.

诚请回信

回信
by return||by return of post||by return of mail

为供您回信方便, 随信附去免贴邮票的信封一个。
A return envelope that requires no postage is enclosed for your convenience in replying.

请开20美元的支票一张, 放在所附信封里, 立即寄给我们。
Make out your check for $20, put it in the enclosed envelope, and start it on its way to us--now.

为了使您从我们这里取得更进一步信息, 随信附去明信片一张备用。
A postcard is enclosed for your convenience in requesting further information.

届时, 用明信片告知我们, 本公司乐意奉告, 当然不会增加任何麻烦。
Then send back the postcard and we'll gladly tell you--without a bit of obligation, of course.