Material Witness
| Publisher | Signet, New American Library |
| Imprint | Signet |
| Copyright Holder | Robert K Tanenbaum |
| Format | Paperback |
| Language | English |
| Copyright | 1993 |
| First Paperback Printing | 1994-08 |
| Pages / Font | 408 pages |
| ISBN 10 | 0-451-18020-8 |
| Barcode | 0 71162 00599 8 |
| Price | $5.99 US |
| Notes | An earlier novel from the Butch Karp series. |
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