A directory entry records an identity. It is not, on its own, evidence of a connection to any Item; each association cites its own source.
2004
Royal Collection Block of 38 Twopenny Blues1840 · Royal Philatelic Collection
Source: Royal Household: Royal Philatelic Collection exhibition in America
2004
Kirkcudbright Penny Black Cover6 May 1840 · Royal Philatelic Collection
Source: Royal Household: Royal Philatelic Collection exhibition in America
2006
Benjamin K. Miller’s One-cent Z Grill1868 · New York Public Library, Benjamin K. Miller Collection
Source: National Postal Museum: Miller Collection exhibition announcement
6 May 1840 · William Mulready · Smithsonian National Postal Museum
Source: National Postal Museum: Mulready first-day cover, accession 0.205561.2
1979 · Bureau of Engraving and Printing · Smithsonian National Postal Museum
Source: National Postal Museum: CIA Invert, position 53, accession 1987.0145.1
