"What par.(1)(b) has in mind is that a notice may
be given requiring the recipient to produce "all
books, documents and other papers" in his custody
or control "relating thereto", that is, to the
income or assessment of the person whose name is
stated in the notice. It is then for the recipient
to decide for himself, difficult though the task
may be, which of the documents answer the
description. If his decision is wrong he exposes
himself to prosecution and penalty.
The existence of this hazard is not a sufficient
basis for the conclusion that the section requires
the Commissioner to give a notice in such terms as
would enable the recipient on reading it and on
examining the documents in his custody or control
to determine whether they fall within the ambit of
the Commissioner's powers. To so hold would be to
impose an impossible burden on the Commissioner.
In many, if not most, cases he will be unaware of
the contents of the documents of which he seeks
production. And there will be cases in which a
recipient who is not the taxpayer will lack the
degree of knowledge of the taxpayer's affairs and
of the Commissioner's approach to his assessment
that is necessary to determine whether the
documents relate to the taxpayer's income or
assessment. Not only would the suggested
requirement frustrate the object of conferring the
power, it would be inconsistent with the section as
I have explained it.
It is not in dispute that a notice given under
par.(1)(b) may validly require the production of
something less than all the books, documents and
other papers in the custody or control of the
recipient relating to the income or assessment of
the named person. If may, for example, specify
particular documents. Such a notice, if correctly
drawn, will make it clear that the requirement
extends to the particular documents because they
are included in the class of documents of which the
Commissioner is authorized to require production."