Sent all Documents
You should sent Copy of your H1B approval notice and Copies of Compleate Petition (1-29+LCA +Coverletter which was writen by Lawyer or Hr Manger of you Company to INS with the petition) your passport pages where name and date of birth appears and your h1B Visa page(no harm if you send all the pages including your Valid I-94) Now they need everything , You should also send Copy of your 4-5 Paystubs and letter from your Employer that you are cureently Employed, Bombay Consulte asked For the Photographs of work Place, better send One exterior Photo and 4-5 Interior of your Employers work site, They ask for it, you wife should take photos of the marriage ceremony and marriage certificate, do not take the risk now they can ask any document, Better you should also write a cover letter that my spouse should be stamped H4 visa and find XYX documents....