Crane's Lettra is the best known name in letterpress papers. The Crane's name has always stood for quality and Lettra holds true to this reputation. Crane's Lettra is manufactured by Crane's Paper in the USA and Crane's Lettra Fluorescent White is 100% cotton. The 4 Bar Euro Flap 32# writing Crane's Lettra Fluorescent White envelopes can be used in a multitude of applications, but is ideal for elegant invitations. Crane's Lettra 100% Cotton Fluorescent White 4 bar euro flap 32# writing envelopes