Rubbing of the names on the wall of Vietnam Veterans Memorial in Washington DC is long tradition. Often there is little or no remains left to comfort family of veterans lost in the war, so the paper with name becomes cherished family relics. Lately US Park Services begin issuing "official" papers with museum name printed on top and passing them to visitors who are looking for names of the loved ones during their visit to the Memorial center in Washington D.C.
<a href="//commons.wikimedia.org/wiki/User:Mpotocnjak" title="User:Mpotocnjak">Mark Potocnjak</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>