Electrically conducting thin films of aniline derivatives have been deposited by the Langmuir-Blodgett (LB) technique and vacuum evaporation. Stable LB monolayers of poly(N-alkylanilines) have been formed and subsequently transferred onto substrates without the usual need to mix surface active molecules with the polymer. Problems associated with the LB deposition of polyaniline in the conducting form by use of a functionalized protonic acid, dodecylbenzenesulfonic acid, are also discussed. Thin films of vacuum evaporated tetra-anilino-benzene and an oxidatively polymerized mixture of aniline oligomers exhibit conductivities exceeding 10(-3) S cm-1 when doped with HCI. The conductivity remains remarkably stable in air in comparison to other doped thin films of conducting polymers or oligomers. Although the oligomers are protonated by HCI, the field-effect mobility, 2.2 x 10(-3) cm2 V-1 s-1 for the as-doped polymerized aniline oligomers, appears to be n-type.