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1. In the Catalog pane, expand the Folders folder.
2. Expand the Imagery folder.

3. Right-click the aerial.jpg raster image and select Add to Current Map.

   Info
   If the Add to Current Map command does not work, you can click the Add Data button within the Map tab on the ribbon and then browse to and select the same JPEG image file.

4. In the Table of Contents pane, right-click the aerial.jpg layer and select Zoom to Layer.
5. In the Table of Contents pane, right-click the streets layer and select Zoom to Layer.

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1. In the center of campus, visually identify Fondren Library in both the aerial layer and the buildings layer.
   
   
   
   
2. In the ribbon, click the Map tab and click the Explore button.
3. Hold down Shift and click and drag a box around Fondren Library in both layers to zoom into the area in which you will add your second control point. You may have to toggle off the buildings layer to see Fondren Library on the aerial layer.
   
   
   
   
4. On the ribbon, click the Georeference tab and click the Add Control Points button.
5. Click on the southwest corner of Fondren Library in the aerial layer.
   
   
   
   
6. With a line linking to the first point you clicked on, click on the southwest corner Fondren Library in the buildings layer.

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Before beginning this tutorial, there was only one aerial file: aerial.jpg. During the tutorial, you generated the two additional files. The JGWX file contains the spatial referencing information that you just created. Because this new file has been created, the image will now line up spatially whenever you add it into a new data frame. In other words, you only need to georeference a layer once. The XML file contains the metadata used by ArcCatalog to describe the newly georeferenced aerial image. If you were to delete these two accessory files, the image would no longer be georeferenced and would be returned to its original state.

Digital Sanborn Maps

Fondren Library provides access to Digital Sanborn Maps for Texas. This database can be accessed here: Digital Sanborn Maps (Texas). Founded in 1867 by D. A. Sanborn, the Sanborn Map Company was the primary American publisher of fire insurance maps for nearly 100 years. The maps provide a wealth of information, such as building outline, size and shape. Come explore America's rich and diverse building history. For this tutorial, you will practice what you learned above by georeferencing two Sanborn maps of Rice University from 1925 and 1951.

1. Open up your ArcGIS Project File again from the Desktop, by double-clicking the Imagery folder.
2. Double-click the Imagery.aprx ArcGIS Project File (blue icon) to open the project in ArcGIS Pro.
   
   Image Added
   
   
3. Maximize the ArcGIS Pro application window.
4. In the Catalog pane, expand the Folders folder.
5. Expand the Imagery folder.

6. Right-click the sanborn_rice_1925.jpg raster image and select Add to Current Map.

7. Right-click the sanborn_rice_1951.jpg raster image and select Add to Current Map.

8. Choose three control points per image to georeference and save the two maps.
   
   

   Info
   Hint: For the 1925 map, try a control point at Lovett Hall, Herzstein Hall, and the road intersection at Rice Blvd and Shepherd Drive. For the 1951 map, try control points at Lovett Hall, Herzstein Hall, and the new Football Stadium.

9. Once complete, in the Contents pane, toggle off the sanborn_rice_1925 layer. 
10. In the ribbon, click the Share tab
11. In the Export group, click the green export arrow and save as a JPEG.
12. Toggle off the sanborn_rice_1925 layer and toggle on the sanborn_rice_1951 layer.
13. Repeat Step 11 for the sanborn_rice_1951 layer.