Hi all,

I've been trying to download the Iowa 24k topo index from the USGS site so I can index our holdings.

But whether I open it directly from the USGS store, https://store.usgs.gov/product/54160 or download the pdf and try opening it in Acrobat, Chrome or Edge, I always get a "corrupted file" message.

Is this just me, or is the file corrupted for all of you stateside as well?

I have found the jpg scan at https://www.yellowmaps.com/usgs/topomaps/index-maps/24/ia.jpg but the resolution is a bit low for my needs.

And the pdf booklet index at https://publications.iowa.gov/22843/1/Iowa%20index%20to%20topographic%20and%20other%20map%20coverage.pdf is neither a single sheet, nor does it have the sheetnames on the map.

Would someone kind be able to point me to/send me (dropbox etc) a decent scan/pdf of the index?

Any help much appreciated!

Thank you,

Brendan Whyte

National Library of Australia