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 ## A looming dark age
 
-We are in the midst of a growing **digital dark age** due to a failure to save and archive it
+We are in the midst of a growing **digital dark age** due to a failure to save and archive ephemeral data
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-###  Evidence
-
-Comparing content in data portals over time
+#### Comparing content in data portals over time
 
 - Source Collections:  **30 ArcGIS Hubs**
-- Dates of harvest: 
-	1. May **2019**
-	2. April **2023**
+- Snapshot dates: May **2019** and April **2023**
 - Temporal Coverage = `2017`, `2018`, or `2019`
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-### Collection practices in map libraries
+#### Collection practices in map libraries
 <img src="presentations/dark-ages-figures/borchert.jpg" alt="" style="object-fit: scale-down">
 
-John R. Borchert Map Library
+<sub><sup>John R. Borchert Map Library</sub></sup>
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-Dates of last **print** distribution
-
-<img src="presentations/dark-ages-figures/usgs-noaa.png" alt="" style="object-fit: scale-down">
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-
 ### Challenges for libraries
 
   - Lack of suitable repositories
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 ## Study 1
 
-**Road** maps and geodata depicting **Minneapolis**
+**Road** maps and geodata depicting *Minneapolis*
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    - John R. Borchert Library **maps**
    - Minnesota state, county, and city **data portals**
 - Time Span:  **1950-2023**
-- Temporal fields: `temporal coverage`, `date modified`, `date issued`
-- Subject/Keywords: **Roads**, **Centerlines**, **Streets**
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 ### Study 2 Parameters
 
-- Resources: library-held print **maps** and public open **geodata**
+- Resources: 
+	- BTAA library-held print **maps** 
+	- public open **data portals** 
 - Time Span: 100 years; **1924-2023**
-- Temporal metadata fields: `temporal coverage`, `date modified`, `date issued`
-- Subject/Keywords: **Roads**, **Centerlines**, **Streets**
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--  **Start small**: save snapshots of high priority datasets
+### Strategies for libraries
+
+  -  **Start small**: save snapshots of high priority datasets
   -  Use **minimum viable solutions**: AWS Cloud Storage 
   -  Focus on interoperable **discovery metadata** using lightweight CSV and JSON formats
   -  Leverage **collaboration** opportunities
@@ -309,7 +299,7 @@
 
 <img src="presentations/dark-ages-figures/rml.png" alt="Robinson Map Library" style="object-fit: scale-down">
 
-UW-Madison's Success Story
+UW-Madison's Achievements
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+**Incremental Steps to a Geodata Collection**
 <img src="presentations/dark-ages-figures/incremental-steps.png" alt="" style="object-fit: scale-down">
 
 
-BTAA-GIN Incremental Steps to a Geodata Collection
+<sub><sup>BTAA Geospatial Information Network plan, 2015-2025</sub></sup>
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