Through an oversight, Worldvision didn't renew the copyrights on most episodes of this series when they expired in the late 1980s, and they thus fell into the public domain. Since royalties didn't have to be paid to Worldvision, the result was a revival of the series on UHF and cable television and on VHS and DVD. Since well-worn syndication prints were and are typically used by those media, the results often leave something to be desired, quality-wise.