Häuser, C. L.; Steiner, A.; Holstein J. & Scoble, M. J. 2005: Digital Imaging of Biological Type Specimens - A Manual of Best Practice. ENBI, Stuttgart 2005.
http://sciweb.nybg.org/science2/hcol/vasc/index.asp
C. 92,000 type specimen
Old address: http://www.nybg.org/bsci/hcol/vasc/
http://ww2.bgbm.org/herbarium/
http://www.flmnh.ufl.edu/herbarium/types/
http://linnaeus.nrm.se/botany/fbo/types.html.en
http://www.nationaalherbarium.nl/virtual/
http://www.huh.harvard.edu/databases/cms/rock-types.html
http://ravenel.si.edu/botany/types/
http://insects.oeb.harvard.edu/mcz/
http://ant.edb.miyakyo-u.ac.jp/MCZ/
http://www.landcareresearch.co.nz/research/biodiversity/invertebratesprog/lepidoptera/
http://www.calacademy.org/research/ichthyology/Types/about_types.html
http://ip30.eti.uva.nl/zma3d/
http://arnica.csustan.edu/herbarium/arnica.asp
http://aei.tamu.edu/public/taxon_names
http://taxa.soken.ac.jp/MakinoDB/makino/html_e/
http://www.calacademy.org/research/entomology/typesdb/default.asp
http://www.sdnhm.org/research/botany/searchtypes.html
http://www.calacademy.org/research/Botany/bottypes.html
http://www.ucmp.berkeley.edu/collections/micro.html
Including the Small Catalog of Foraminifera Type Specimens
2,229 type specimens are documented by approx. 25000 images
http://cms.huh.harvard.edu/databases/specimen_index.html