Yes....There are a few that one should at least dub from the original..Problem is that your at the mercy of the person recording equipment.. There could be a hum, buzz, click in recording which in my opinion renders it useless..
When one see certain tapes in old stores or at flemarkets it might be good to buy them... Tapes like Johnny Stewart Grey Fox's Pup...I already have two of these and I do not use the newer yellow labeled one. still use the old white labeled one until it goes Kaput...