Setting
Historical & institutional context
Kind of evidence
Contemporary book review
Review extent
Targeted source check

What was studied

Merz reviews the series prepared by Osbourne McConathy, Russell V. Morgan and Harry F. Clarke.

What it contributes

The review describes individual technical exercises, four-part hymns and folk songs, and full-band excerpts as stages toward ensemble playing.

Where the evidence stops

This is a contemporary reviewer’s assessment, not an effectiveness study. It does not establish that any particular Oklahoma band used these books.

About this review

The specific review on page 89 was checked in the retained source copy, separately from surrounding reviews.

Source note updated September 10, 2026. Read our approach to evidence.

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