I don't remember where I picked this up from but it was on a schematic for a SD card interface.
gnd-----1 2-----gnd
3.3------3 4-----3.3
5--------5 6-----5
SDCS---7 8-----SDCS
MOSI---9 10-----MOSI
SCK----11 12----SCK
MISO--13 14----MISO
gnd----15 16-----gnd
it was using a 2x8 header.