Tarzan's Secret Treasure

I love the old Johnny Weissmuller/MGM "Tarzan" movies of the 1930s and 40s. I have them all six of them on laserdisc from the 1990s, but I have to wonder in what form they will arrive on DVD -- if ever? Watching "Tarzan's Secret Treasure" (1941) today I was amazed to hear for the first time, after many viewings, Barry Fitzgerald's O'Doul character refer to a little black native boy as a "pickaninny." In the earlier Tarzan movies the blacks are constantly called "boy" and other derogatory terms and often casually shot by white men for disobeying orders. I'm not sure, but I think there may be a problem with this being released on DVD today, but my point is that I DON'T want to see these films edited in any way. They're time capsules of entertainment from an earlier era, and they should be preserved.