On March 13, 1932 Erastus Hudson of Plattsburgh was asked to visit the crime scene in the Charles Lindbergh home to secure whatever evidence he might produce. First using the standard dusting process, which was best for solid surfaces, he found no prints in the nursery on any items that had already been checked, confirming Kelly’s results, but he did find thirteen on the baby’s books and toys. These were extremely valuable because the baby had been born at home, and thus no fingerprints had been taken. Those gathered by Hudson were the only means of identifying the baby for certain—if he were ever found.
Turning his attention to the ladder that had yielded no prints to police experts, Hudson spent a couple of days applying his innovative process. He estimated collecting “more than 500 fingerprints and fragments, some of which were sufficient to be of value.” » Continue Reading.