Links:
[1] http://www.library.northwestern.edu/libraries-collections/evanston-campus/transportation-library
[2] http://www.library.northwestern.edu/libraries-collections/evanston-campus/transportation-library/collection/ohare50/acknowledgements
[3] http://www.library.northwestern.edu/libraries-collections/evanston-campus/transportation-library/collection/ohare50
[4] http://www.library.northwestern.edu/libraries-collections/evanston-campus/transportation-library/collection/ohare50/research-materials
[5] http://www.library.northwestern.edu/libraries-collections/evanston-campus/transportation-library/collection/ohare50/the-traveler
[6] http://www.library.northwestern.edu/libraries-collections/evanston-campus/transportation-library/collection/ohare50/oddities
[7] http://www.library.northwestern.edu/libraries-collections/evanston-campus/transportation-library/collection/ohare50/research-materials-0
[8] http://www.library.northwestern.edu/libraries-collections/evanston-campus/transportation-library/collection/ohare50/research-materials-1
[9] http://www.library.northwestern.edu/libraries-collections/evanston-campus/transportation-library/collection/ohare50/research-materials-2