These files, even when opened in LibreOffice, came out as gibberish. I have a friend with the same problem. We have lots of valuable documents from this period.
I had an original Mac and then one of those iMacs with the coloured transparent container etc.
Here is a sample of what I get
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#��##q�@Ɉ2��#�#b�#,&/�#�b�aL�&,���1�+Q�#�y� ���#�~��b��###3�#�ic1#^��o�X�.�##��#H4�i�u�;#�#iN䞔��1#gS1���##(:#"Js�Y���G#�y��3<#��=sGe@�#� F����jh.��2�1�g�0�(�Ub�Т��1#\�J�ř�#a��*O#�/#�4#�Rg[#�#���s1|�#d�İa�ҰϞ��E1$V�rY<4�gE%�$�U_1cҼf[��źT�A���r