You do not need the original offer letter,

來源: 於 2007-04-09 15:13:51 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

you could ask the hiring manager to write a letter using a title on the list. It is important to state 'we plan to hire him/her for the next 12 months'.