epistle

noun 0.724

letterbook

noun 0.595

epigraphy

noun 0.581

epitaphic

noun 0.564

letterer

noun 0.557

elegiac

noun 0.551

love letter

noun 0.542

epigraph

noun 0.542

letters

noun 0.542

pseudepigraphy

noun 0.517

philately

noun 0.514

postal history

noun 0.510

correspondence

noun 0.509

letter

noun 0.508

encyclical

noun 0.506

paleography

noun 0.503

diary

noun 0.503