We have various size map cases on different floors. Try to put items in the smallest reasonable folder size. Here are selected folder sizes:

• 24/R.Map 7: 36×25“ folders
• 24/R.Map 8: 49×37” folders
• 26/T.Map 1&2: 39×25“ folders
• 26/T.Map 3: 51×40” (top section), 48×40“ (middle section), 51×40” (bottom section)
• 26/T.Map 4: 36×25“ folders
• 26/T.Map 5: 42×30” folders

We've created 2 communal oversize boxes that are intended to be used when you have a couple of OS items and don't want to waste space or $ in a 1.5“ or 3” deep box limited to just that collection.

• These boxes live on 26 at T.4:F4
• One box is 20×24“ and the other one is 14×18“. There is one size in-between that we can add as well.
• There is stock to make folders on demand. Store multiple items from the same collection per folder.
• Stamp the folder (leave a 1/2” tab) and label appropriately.
• Add notes on the tab as needed, i.e. “Rooney: album covers and posters”. I filled out the stamped box/folder space this way for communal oversize box 1, folder 1:  COS 1:1
• Add the folder number and collection number/name to the inventory sheet that lives in the box.

Here's my entry in the finding aid. In this case I had multiple c02 that I put in the FA, all mapped to folder 1: 

<c02 level=“file”>
<did>
<container type=“box”>COS 1</container>
<container type=“folder”>1</container>
<unittitle>Poster: Conversation with Jim Rooney, Country Music Hall of Fame</unittitle>
<unitdate type=“inclusive” normal=“2016-09-24”>2016 Sept. 24</unitdate>
</did>
</c02>

In the collection location, add an entry for 26/T.4:F4 and add the following note: Communal OS box 1 (COS 1). Change the number if you're using the other size boxes per the label. Unfortunately the note is not currently searchable in the DB, so you'll need to ask around or refer back to this page if you forget where they're stored.