What is the test for making a written demand to obtain union members' examination rights?

In Zastrow v. Teamsters, 56 L.R.R.M. 2873 (Wis.Cir.Ct.1961), the court sustained the union's demurrer to a petition seeking to enforce certain members' examination rights. The court held that the union members must make a written demand upon his union which sets forth "(1) cause to examine; and (2) a statement linking records to a specific report." 56 L.R.R.M. at 2874. The court's sole authority for this result was the case of Henderson v. Sarle, 45 L.R.R.M. 3037 (N.Y.Sup.Ct.1960). There, without any supporting authority, the court said: "Such a duty to permit examination cannot arise until there has been a demand setting forth the cause and relating the books, records and accounts to a specific report." 45 L.R.R.M. at 3038.