My grader's mailbox

The mailroom of the Math Department is located at 15 MLH, which is on the ground floor, west side of the building.

If you enter the mailroom, you will see

Professor's	Mail	Boxes	Door	TA's	Mail	box
Professor's	Mail	Boxes	Door	TA's	Mail	box
Professor's	Mail	Boxes	Door	TA's	Mail	box
Professor's	Wang	Boxes	Door	Choi	Mail	box
Professor's	Mail	Boxes	Door	TA's	Mail	box

Choi's mailbox is at about the Choi in the above map.

My mailbox is at about the Wang in the above map.