State of Colorado telephone directory

text file, Ceased in 1993/94., Published: El Paso, TX : Craftsman Publications, <1988->, Issued by: Colorado Division of Communications, <-1975>, Description based on: 1970 issue.

: State of Colorado telephone directory. 1975; text file, Ceased in 1993/94., Published: El Paso, TX : Craftsman Publications, <1988->, Issued by: Colorado Division of Communications, <-1975>, Description based on: 1970 issue.

: State of Colorado telephone directory. 1977; text file, Ceased in 1993/94., Published: El Paso, TX : Craftsman Publications, <1988->, Issued by: Colorado Division of Communications, <-1975>, Description based on: 1970 issue.