The narrow issue in this appeal from an adjudication of contempt and resulting imprisonment is whether a witness may, by the “mere assertion” that her grand-jury subpoena was the primary product of an illegal wiretap, successfully resist the grand jury’s demand for nontestimonial evidence, in this case, fingerprints and handwriting samples.

The case does not involve the production of testimonial evidence. See Gelbard v. United States, 408 U.S. 41 , 92 S.Ct. 2357 , 33 L.Ed.2d 179 (1972); United States v. Vielguth, 502 F.2d 1257 (9th Cir. 1974). This witness simply refused to make or furnish a handwriting sample, and refused to allow her fingerprints to be taken. 1 Her sole basis for her refusal to furnish these items of tangible evidence was that she said she believed that a telephone at a house where she lived had been wiretapped.

The government chose not to answer the wiretap allegation with the detailed disclaimer required when a witness files a nonfrivolous affidavit, that the evidence sought is based upon illegal wiretap intelligence. 2 See, e. g., United States v. Vielguth, supra.

The government chose, instead, to meet the assertion by arguing, in the manner of a demurrer, that the grand jury’s interest in the handwriting and fingerprints of this witness could not be the “primary product” of any wiretap, if there had been one.

It appears from the record in this case that the government was interested in the fingerprints and handwriting exemplars of one or more persons known to be closely associated with a person who had blown himself up while trying to plant a bomb. It also appears, from the appellant’s affidavit and elsewhere in the record, that the appellant had been the object of police surveillance. The most cursory surveillance would have discovered that the appellant lived with, or spent a good deal of time at the home of, the deceased bomb handler. That fact alone might have explained the grand jury’s curiosity about the identity of the makers of handwriting and fingerprints then in the possession of those charged with investigating the attempted bombing and other possible felonies.

The appellant has provided no rational basis for believing that a wiretap of her friend’s house, if there was one, had anything to do with the grand jury’s felt need for fingerprint and handwriting evidence. Because the appellant has suggested no causal connection between any monitoring of her friend’s telephone and the grand jury’s request for the evidence sought to be produced, we do not reach the question of the appellant’s standing to challenge the eavesdropping, if any, of a telephone she *1247 does not claim as her own or even allege she ever used.

We hold only that when the grand jury asks for fingerprints or handwriting samples that are not otherwise precluded by some rule of law, the consequences of contempt cannot be avoided simply because the recalcitrant witness believes that somebody’s telephone may have been the object of illegal electronic surveillance.

The judgment is affirmed.

. She also refused to stand in an identification lineup, but this point was made moot when she was subsequently placed in a lineup against her will.

. 18 U.S.C. § 3504 (a) provides: