By Toy, Eugene, Seifert, WILLIAM, Strobel, Henry, Harms, Konrad
By Seifert, Kelvin
By Seifert, Lucy
By Seifert, Gerhard
By Treves, Letizia, Weston–lewis, Aidan, Finaldi, Gabriele, Seifert, Christian Tico, Waiboer, Adriaan
By Seifert, Roger V., Sibley, Tom
By Seifert, Rich
By Seifert, Sheila, Naylor, Beth
By Seifert, Thomas
By Dennis, Jeanne Gowen, Seifert, Sheila, Hohn, David, Adair, Ron
By Seifert, Roger V.
By Strachey, Julia, Seifert, Nicole
By Schwartz, Liz, Seifert, Stephen