http://wp.me/p6vraS-ku An easy way to quickly calibrate color for photos in editing is to click the eye dropper onto a grey card in Lightroom, then batch edit the similar photos around it.

http://layersmagazine.com/using-a-gray-card-for-setting-white-balance-in-adobe-photoshop-camera-raw.html

If there was no grey card available but there is some other neutral grey close to it, try setting the white balance via that grey, or choose auto tone, or a specific lighting setting based upon the lighting conditions the photos were taken in.