| | ILG of the year 1979 | |
 | The first and last page of the first "International Listening Guide" published by a 16 paged booklet in November 1979
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| | ILG Frequency Database of Winter 1983 | |
| Scans of the first ILG frequency database including a frequency list which was written by an newer type writer published in November 1983
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| | ILG Frequency Database of Summer 1983 | |
| Scans of the first ILG frequency database including a frequency list which was written by an old type writer published in May 1983
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| | ILG Frequency Database of Winter 1989 | |
| Scans of the ILG frequency database including a frequency list with graphical diagramm which was written by a MS DOS Computer in November 1989
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