Mickey Mouse Magazine, 1936 | Source
Les Paul, 1951 | Source
The personal letterhead of legendary musician and inventor Les Paul, as used in 1951.
KesselsKramer, 2007 | Source
The letterhead of Dutch “communications agency” KesselsKramer, complete with detachable business card.
Jackie Collins, 2002 | Source
The personal stationery of novelist Jackie Collins.
(Note: I’ve removed her home address from beneath her name.)