100 Years of the National Park Service (ESRI StoryMap)
On the right side under Resourse Type choose Government Documents from the drop menu before searching.
Images do not float freely on the Internet: they are attached firmly to webpages full of text. Try using Images to find information about the National Park Service. You can often uncover sources which you might not discover otherwise.
This is how you do it: do a Google Search using your search terms, for example, National Park Service goals. Then click on the IMAGES link at the top of the screen, just under the search box. You will be taken to a page of IMAGES. Select one. The image will be enlarged, and to the right of it will be a VIEW PAGE Tab. Click the tab to be taken to the website where the image is located.
Try it yourself using you own search terms!