A massive effort led by Herr Dipl. -Ing Dr. Erwin Lichtenegger going from 1960 up till 2009 was what I looked at. Was interested for a while to get these into a 3D format but never got a reply from the library or the Pflanzensoziologisches Institute. I think these would look great animated and can only wonder what the good doctor would have achieved archiving with today's tools. Effort and dedication like that applied over time is a rare thing I am glad they are well preserved as works of art as much as science.

Ps also the workbooks of Dr. Santiago Ramon y Cajal on brain neurons are museum quality pieces with some startling similarities to these roots from a distance.