title: How to crack an Excel workbook that looks up values?
body: <p>Alright I know this isn't 100% related to programming (the Excel book in question doesn't use VBA at all) but I'm hoping someone can help me out with this or point me in the right direction.</p>
  
  <p>My boss got a spreadsheet from a vendor that has a combobox/dropdown list with various part numbers; when you select one it populates the rest of the form with a lookup containing additional items.  I've been tasked with "cracking" this and finding the list that they're using to populate so we can make use of it.</p>
  
  <p>The thing is... there's no VBA code, no macros, no data connections, and only one Worksheet displayed in Excel while the lookup code references a <code>Sheet1</code>.  I've tried to display hidden worksheets and it says there are none... so where on earth could this list be kept?  My boss is getting impatient and is asking me if I've broken it yet.  It's not a big deal if it can't be done, I just have no clue where to continue looking for it and I don't know what to tell my boss when he asks me if I'm done.</p>
  
  <p>Can anyone help?</p>