Semex Ireland 2011
Tag Holstein USA December 2010
Semex UK - Holstein Sire Directory August 2012
TAG - Holstein sires
TAG - jersey usa
TAG Elite Genomic Sire Listing
Holstein Listing Sire canada
Semex April 2011 USA Jersey Catalog
Semex August 2011 International Holstein Catalogue
Holstein Sire Listing
April 2014 Crossbreeding Directory
Holstein USA sire listing