Brendan, We store our air photos flat in custom made boxes. BTW: acid-free boxes are not appropriate for photos. You have to get the special photo archival boxes (even more expensive). The boxes we use are plastic. Very far from acid-free but totally inert with photograph paper. See my article in WAML Information Bulletin: “Solving Our Aerial Photographs Collection Problem” (Thiry), 43:1:18–23 http://www.waml.org/ib-back-issues/IB-V43N1-Nov11.pdf Western Association of Map Libraries<http://www.waml.org/ib-back-issues/IB-V43N1-Nov11.pdf> Volume 43 Number 1 November 2011 Western Association of Map Libraries “. . . to encourage high standards in every phase of organization and administration of map libraries . . .” www.waml.org Christopher J.J. Thiry Map & GIS Librarian Academic Outreach Coordinator Colorado School of Mines Arthur Lakes Library 1400 Illinois Golden, CO 80401 p. 303-273-3697 f. 303-273-3199 [log in to unmask]<mailto:[log in to unmask]> http://www.mines.edu/library/ ________________________________ From: Maps-L: Map Librarians, etc. <[log in to unmask]> on behalf of Brendan Whyte <[log in to unmask]> Sent: Wednesday, April 3, 2019 10:24 PM To: [log in to unmask] Subject: Re: Aerial Photo storage We have special archival-cardboard boxes (25x25x6 cm) with removable lids (25x6x4cm). However the 23x23 cm photos in the boxes are stored upright, and do indeed warp. Storing them on their sides would be better, but then the lids fall off the boxes (and prevent the boxes sitting flat) Keeping the photos flat somehow is a good idea. We group ours by run (with a labelled paper band around each run), and also turn the top photo in each run over so that when handling each run, fingers only come in contact with the backs of the photos, not the front. Brendan Whyte National Library of Australia ------------------------------ Date: Wed, 3 Apr 2019 16:36:29 -0400 From: Jeff Essic <[log in to unmask]> Subject: Aerial Photo storage Hello, I am asking this on behalf of a colleague. What is a recommended means of storing hard-copy aerial photographs? He has a few hundred. Someone has suggested storing them on edge in a filing cabinet in a climate controlled room, but I thought that may cause them to warp. Are there any special factors to consider? Thank you, Jeff Essic NC State University Libraries ------------------------------ End of MAPS-L Digest - 2 Apr 2019 to 3 Apr 2019 (#2019-58) **********************************************************