For your viewing pleasure, I have created a Flickr set of 341 images of drawings by Hugh Ferriss.
They are taken from the collection available online at the Avery Libary of Columbia University, where you can also download scalable high-resolution .SID files.
What this Flickr collection does is allow you to easily view the stunning work that Ferris churned out during a career spanning 40 years as the foremost architectural delineator or perspectivist in the USA.
If this doesn't inspire you to dig out the pencils this Christmas and start drawing, then nothing will. Happy Holidays from Kosmograd!