While I don't think any of my projects have involved quite as many library sources as that one, I do still even now rely on internet research, source texts, and such. The latest little chap, terrestrial animal, involves some re-appropriated text from marketing materials selling cold-war era underground houses. I've been researching route 66 roadside attractions for another project. Using another volume as inspiration for another series of poems. Older stuff, like archer avenue, errata, and the Cornell project, all involved research and other texts in various ways.
I suppose it's inevitable given the amount of time I've spent in libraries during my entire day job work history. (which has pretty much only been libraries, first at the elementary school and then at the college level). All that time spent among the shelves and in front of the computer, it's no wonder it's rubbed off on me.