| |||
| master card file | |||
| |||
| guide card; head card | |||
| tab index card | |||
| cross reference card | |||
| leading card; header card | |||
| permanent card | |||
| ledger card; tab card | |||
| catalog guide card; master punch card; leading punch card | |||
| file card | |||
| master card; test card; master caro (Lochkarte) | |||
|
Leitkarten : 2 phrases in 2 subjects |
| Punched cards | 1 |
| Technology | 1 |