<span class="searchmatch">deltiologists</span> plural of <span class="searchmatch">deltiologist</span>...
From deltiology + -ist. <span class="searchmatch">deltiologist</span> (plural <span class="searchmatch">deltiologists</span>) A collector of picture postcards....
postcards. (study and collection of postcards): collection deltiological <span class="searchmatch">deltiologist</span> study and collection of postcards “deltiology” listed in the Oxford English...