Here in Portland we use: Map Pockets (Vinyl corner pockets) Brodart Item #32516 3 ½”  x 3 1/3”. 
* cut each square into quarters - yielding 4 corners
* we only use 2 of the corners
* Assuming that you are inserting the map inside the back cover, affix one corner in the bottom right corner of the back cover
* Use the map itself as a guide for placement of the other corner - depending on the size of the map it will be somewhere along the right edge, near the top
These hold the map securely, allow for easy access, and don't add too much bulk. 

You can email me off-list if you would like to see photos (which may be more useful than above description). 
Julie 


Julie Wilcox
Technical Services Manager
Portland Public Library
5 Monument Square
Portland, ME 04101
(207) 871-1700 x748 

-----Original Message-----
From: Maine Libraries Discussion List <[log in to unmask]> On Behalf Of Kate Jacobs
Sent: Thursday, January 17, 2019 9:17 AM
To: [log in to unmask]
Subject: [MELIBS-L] Tips for processing travel guides with maps

Do any processing wizards have a good method for containing the maps that come in travel guides? We want them to be loose so people can actually use them, but are struggling to find a good DIY envelope/flap solution that doesn't bend the cover and binding out of shape. If you've found a solution, I'd love to hear it!

Thanks,

Kate


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Kate Jacobs
Cataloger & Technical Services Librarian Kennebunk Free Library
112 Main Street
Kennebunk, ME 04043
(207) 985-2173