Declaration of the National Anti-Slavery Convention was written by William Lloyd Garrison for the formation of the American Anti-Slavery Society in December 1833. It was reprinted in The Liberator on December 14, 1833. It is now available in the Public Domain.
You can also use the Optimized PDF option to crank the size down in very targeted ways. Given the big before/after shift, the culprit is probably the image you're embedding. Try exporting that file in various formats (PDF, jpg, png) and then import it.
You can reduce the file size and save disk space by compressing pictures in your document. The compression options reduce both the file size and picture dimensions based on how you intend to use the picture, such as viewing on screen or in an e-mail message.o any of the following: Compress all pictures. On the File menu, click Reduce File Size. Note If your document is saved in the older .doc file format, the Reduce File Size option will not be available on the File menu. To use the Reduce File Size option, save your document in the newer .docx file format.