24, 27, 30, 33, 38: http://www. flickr.com/photos/scottloftesness/8438803599/ Slide 3: http://www.flickr. com/photos/akrockefeller/7208427782/ Slide 4: http://www.flickr.com/photos/oreillyconf/7586672244/ Slide 5: http://www.flickr. com/photos/cesar_pinera/6891099866/ Slide 6: http://www.flickr. com/photos/40052117@N03/6891670282/ Slide 7: http://www.flickr.com/photos/reidab/7537536444/ Slide 8: http://www.flickr. com/photos/allhandsvolunteers/6775775328/ Slide 9: http://www.flickr.com/photos/kkseema/2042946052/ Slide 10: http://www.flickr.com/photos/reidab/7678214980/ Slide 11: http://www.flickr.com/photos/crdot/7827425552/ Slide 14: http://www.flickr. com/photos/43052603@N00/3780675624/ Slide 15: http://www.flickr. com/photos/thomashawk/155918164/ Slide 17: http://www.flickr. com/photos/ittybittiesforyou/2299598686/ Slide 18: http://www.flickr.com/photos/sigusr0/2352351336/ Slide 19: http://www.flickr.com/photos/ant1_g/6913508663/ Slide 21: http://www.flickr. com/photos/brandon_brubaker/2231224887 Slide 23: http://www.flickr. com/photos/mezzoblue/8404839166/ Slide 25, 26: http://www.flickr. com/photos/ejpphoto/2382053839/ Slide 28, 29: http://www.flickr. com/photos/floeschie/4345518893/ Slide 31, 32: http://www.flickr. com/photos/planetschwa/1392652671/ Slide 34: http://www.flickr.com/photos/ecstaticist/4434864256/ Slide 39: http://www.flickr.com/photos/__olga__/2822660113/ Slide 41: http://www.flickr.com/photos/oberazzi/318947873/ Slide 42: http://www.flickr.com/photos/manachar/3127739124/