History：
ItwascreatedonJuly3,1884byCharlesDow,co-founderofDowJones&Company,aspartofthe"Customer'sAfternoonLetter".Atitsinception,itconsistedofeleventransportation-relatedcompanies:ninerailroadsandtwonon-railcompanies.Theywerethefollowing:
Chicago,MilwaukeeandSt.PaulRailway
ChicagoandNorthWesternRailway
Delaware,LackawannaandWesternRailroad
LakeShoreandMichiganSouthernRailway
LouisvilleandNashvilleRailroad
MissouriPacificRailway
NewYorkCentralRailroad
NorthernPacificRailroadpreferredstock
PacificMailSteamshipCompany(notarailroad)
UnionPacificRailway
WesternUnion(notarailroad)
