I have been reading old copies of the Railway Magazine from the 1950s and 1960s. The old small format magazines somehow seem more attractive than the glossy larger format modern magazines, perhaps that is a sign of ageing!
In the January 1963 edition of the magazine there is a long article about the railways of Iran which is based on a visit in 1961 to Iran by M.H. Baker MA.
Until the 1930s, Iran was relatively isolated, but from around 1865 various European Countries had sought concessions to construct railways but the Imperial government continued to value isolation above integration.