C&O SD40 7534 (now CSX 4617)
CSX 4617 when it first received its renumbered patch
IC 6071 (ex GM&O 950, nee EMD 434) is a SD40X built in 1964, which is often regarded as the very first SD40 ever built (though the unit itself was eventually rebuilt as a SD40A by the IC later on during its life)
Two rebuilt former SP D&RGW-painted SD39 units (rebuilt from SD40/SD40-2 units) used for the filming of the movie "Switchback"
A former KCS-painted CP-patched SD40-2
NS 3329; the very first Conrail SD40-2, painted in the Maersk Sealand exclusive scheme
An NS "Admiral Cab" SD40-2
A CP SD40-2 with a "radiator shield"
A grey-painted CN SD40-2 which is actually one of the many former Wisconsin Central (WC; units originally owned by the Algoma Central) SD40-2 units which were absorbed into the railroad after the WC's purchase in 2001
A former UP (originally MP) CN SD40-2
The electrical cabinet normally located behind the cab of SD40-2's, though this one can be seen because the cab has been removed
BN #1976 (formally BN #9853)
BN #1876 (the original #1976) with GE U30C #1776 hauling an American Freedom Train special during the United States' bicentennial anniversary in 1976