Help about visa application approval letter

My dad came to USA 10 years ago and I applied visa extension once for him. I plan to invite him to visit again. Is the visa extension approval letter a must for his visa application? if it is, is the I-824 a must to get the copy of the letter? it needs 2-3months and #340! :(

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回复:Help about visa application approval letter -863211- 给 863211 发送悄悄话 863211 的博客首页 (236 bytes) () 04/28/2010 postreply 08:29:37

really? -travel4fun- 给 travel4fun 发送悄悄话 (104 bytes) () 04/28/2010 postreply 09:01:06

回复:really? -863211- 给 863211 发送悄悄话 863211 的博客首页 (373 bytes) () 04/28/2010 postreply 09:29:25

ok, thanks -travel4fun- 给 travel4fun 发送悄悄话 (0 bytes) () 04/28/2010 postreply 13:05:32

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