Sharing back.
Three unanimous responses thus far, Cisco Meraki MR86 access points, with an add-on antenna package. From what several people have told me, there are a number of antenna options. Which antenna / access point model / and how many access points you need for your application can be determined by coordinating with the Meraki account manager. His name is Greg Manter:
gmanter@cisco.com, 925-783-6474. He may be able to send a test device prior to purchase.
TLN offers a discount purchase program through vendor CDWG. There is an ongoing license fee to manage Meraki devices, but we can at least pay for the first year with CARES money. If I go with these, I'll probably get outside help with installation, because in our case I may need to penetrate the envelope of the building.
Hat tip to Angie Michelini (The Library Network), Garrett Schmidt (Public Libraries of Saginaw), and Rebecca Higgerson (Brandon Twp. Public Library).
Bruce MacDonald
Peter White Public Library
Marquette, MI