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Pope Saint Paul VI (3 April 1969): “Although the text of the Roman Gradual—at least that which concerns the singing—has not been changed, the Entrance antiphons and Communions antiphons have been revised for Masses without singing.”

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Views from the Choir Loft

The Tiniest Prayer Books: the Key of Heaven

Veronica Brandt · September 19, 2020

When Jeff Ostrowski mentioned little tiny hand missals in his photo from World War II, I knew I had to show him these tiny treasures. I don’t have much background information on these as they came from secondhand bookshops. They seem to be fairly common, with a few friends on Facebook recognizing them. Some have treasured copies from their grandparents. Both of mine are made in Belgium but bear the names of Australian publishers.

Two copies of Key of Heaven
Two copies of Key of Heaven: 1905 and 1939.

They are in fairly poor condition. One particular seems to have been well used at Mass as the Method of Hearing Mass is particularly stained and worn. To give some idea of the scale, here are some pictures for comparison with some other small books: The Madonna Missal, Manual of the Children of Mary and The Imitation of Mary. Hmmm… quite a Marian theme going on here.

Now, let’s look inside! This first collection of photos comes from the older and smaller of the two. This one is dated 1905. The type is a little smaller and has an elegant red border around each page.

The other one comes from 1939 and has larger type and more illustrations. The front cover is detached and has a crucifix embedded inside with the indulgenced Prayer before a Crucifix printed on the facing flyleaf. It seems to be some sort of Mother of Pearl material used to make the cross. See here for a comparison with a more modern book using white plastic instead.

A quick web search revealed a similar such book under the same title is still available. It doesn’t look quite the same – for one thing this new edition is much larger measuring 6″x4″ whereas these older books are a tiny 4″x2.25″. It sounds like the idea is the same though.

It makes sense, when Mass and the Readings are in Latin, having a portable copy of your own vernacular translation makes sense. I wonder if Fr Gereon Goldman had such a book in German. I’ve heard stories of pocket prayer books or Bibles stopping bullets in wartime. There are even some made with a steel plate cover called Heart Shields.

All this goes to show that people did care about praying the Mass with understanding back in the days before ICEL.

Opinions by blog authors do not necessarily represent the views of Corpus Christi Watershed.

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Filed Under: Articles Last Updated: September 19, 2020

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About Veronica Brandt

Veronica Brandt holds a Bachelor Degree in Electrical Engineering. She lives near Sydney, Australia, with her husband and six children.—(Read full biography).

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President’s Corner

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    Our tiny 501(c)3 nonprofit organization exists solely by generous readers who donate $5.00 per month. We have no endowment; we have no major donors; we run no advertisements; we have no savings. A donor wrote to us: “I so appreciate all you do and have done, and your generosity is unprecedented. I am honored to be able to make a monthly contribution.” Another monthly donor says: “Thank you for everything CC Watershed does. We are able to add so much solemnity to Holy Mass due to the resources made available here.” Can you spare a few dollars each month to help us survive?
    —Corpus Christi Watershed
    Dom Pothier • Photo from 1904
    Dom Paul Cagin, in a 1904 publication (L’oeuvre de Solesmes dans la restauration du chant grégorien) made sure to include a beautiful image of Dom Pothier, the legendary abbot of St-Wandrille. Also shown is a very young Dom André Mocquereau. Auguste Pécoul—considered the spiritual “son” of Abbat Prosper Guéranger of Solesmes—wrote as follows on 24 June 1901: “To forestall any confusion, let us remember that there is just one Gregorian notation—that restored, according to the ancient manuscripts, by the eminent Abbot of Saint-Wandrille, Dom Pothier.” ✠
    —Jeff Ostrowski
    PDF • “3-Voice Motet” (Father De Laet)
    I believe 99% of our readers will recognize this hymn tune. Perhaps Father Edgard De Laet should have called it a ‘hymn’ instead of a ‘motet for three voices’—but he’s technically correct, since MOTET is defined as: “a short piece of sacred choral music, typically polyphonic and unaccompanied.” The even verses are for three voices, as you will see if you download the PDF score at #20245. The odd verses may be song a cappella SATB or unison with organ.
    —Jeff Ostrowski

Quick Thoughts

    “Reminder” — Month of Febr. (2026)
    On a daily basis, I speak to people who don’t realize we publish a free newsletter (although they’ve followed our blog for years). We have no endowment, no major donors, no savings, and refuse to run annoying ads. As a result, our mailing list is crucial to our survival. It couldn’t be easier to subscribe! Just scroll to the bottom of any blog article and enter your email address.
    —Jeff Ostrowski
    PDF Chart • “Plainsong Rhythm”
    I will go to my grave without understanding the lack of curiosity so many people have about the rhythmic modifications made by Dom André Mocquereau. For example, how can someone examine this single sheet comparison chart and at a minimum not be curious about the differences? Dom Mocquereau basically creates a LONG-SHORT LONG-SHORT rhythmic pattern—in spite of enormous and overwhelming manuscript evidence to the contrary. That’s why some scholars referred to his method as “Neo-Mensuralist” or “Neo-Mensuralism.”
    —Jeff Ostrowski
    PDF • “O Come All Ye Faithful” (Simplified)
    I admire the harmonization of “Adeste Fideles” by David Willcocks (d. 2015), who served as director of the Royal College of Music (London, England). In 2025, I was challenged to create a simplified arrangement for organists incapable of playing the authentic version at tempo. The result was this simplified keyboard arrangement (PDF download) based on the David Willcocks version of “O Come All Ye Faithful.” Feel free to play through it and let me know what you think.
    —Jeff Ostrowski

Random Quote

Agnes De Mille: “When I see my work, I take for granted what other people value in it. I see only its ineptitude, inorganic flaws, and crudities. I am not pleased or satisfied.” — Martha Graham: “No artist is pleased.” ADM: “But then there is no satisfaction?” — MG: “No satisfaction whatever at any time,” she cried out passionately. “There is only a queer divine dissatisfaction, a blessed unrest that keeps us marching and makes us more alive than the others.”

— “Martha Graham on the Life-Force of Creativity”

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  • PDF Chart • “Plainsong Rhythm”

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