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Access to the accounts in Atlas is separate and has to be rerequested from SAO (funds@mit.edu) every fiscal year. You can check rolesweb to see if someone has access.
Miscellaneous
The mailing list caostatementmessage is a mailing list that the MIT Office of the Vice President of Finance (formerly known as the Controller's Account Office, hence the list name) uses to communicate finance updates to the MIT community. It's mostly not targeted at student groups, but occasionally has useful or interesting information.
Other treasurer pages
So far I'm doing stuff by labels, so most useful stuff is below.
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