What is the status of the Montessori Bibliography Online?

I periodically do an audit of the bibliography to gain an understanding of the extent of the coverage. Generally, I focus on 5 areas and for the most part the scope of these categories are self-evident, however there are some nuances to consider.

Type of entry refers to the type of material – journal article, book, book section, et cetera – in which the citation references.

Language of content refers to the language(s) which the referenced document is written. In some cases a document may be written in one or more languages.

Year of publication is pretty self-evident, this refers to the year in which the document was published. In some cases the date of publication is unknown or unidentified so this field is left empty.

Available or unavailable in digital form refers to whether the document is accessible digitally from a reputable and reliable source. This includes content that is freely available as well as content available behind a paywall.

Finally, tagged or untagged refers to whether I have completed a basic level of cataloging of the content. As I add content to the database I attempt to assign relevant tags – this has been a challenge to maintain or sustain which is why I am soliciting collaborators.

If you are interested in collaborating on the cataloging of entries in the Bibliography, please contact me via email. Please include a brief introduction of yourself and your experience with cataloging bibliographic content or metadata management.

As of February 7, 2024 – 44,564 unique entries

Type of entry

Type Quantity Percent
Books 3,665 8.22 %
Book sections 2,850 6.40 %
Journal or magazine articles
   – Peer Reviewed (more info)
75.74 %
Manuscript of archival collections 429 0.96 %
Newspaper articles 1,925 4.32 %
Theses or dissertations 1,373 3.08 %
Other 569 1.28 %
“Other” is a combination of types which individually make up less than 0.5% of the entire dataset. These types include: audio recordings, blog posts, conference papers, datasets, dictionary entries, documents, encyclopedia articles, interviews, patents, presentations, reports, video recordings, and web pages.

Language of content

Language Quantity Percent
Dutch 3,332 7.48 %
English 27,787 62.35 %
French 578 1.30 %
German 2,882 6.47 %
Hungarian 298 0.67 %
Italian 6,334 14.21 %
Japanese 890 2.00 %
Korean 352 0.79 %
Spanish 568 1.27 %
Swedish 230 0.52 %
Other 1,408 3.16 %
“Other” is a combination of languages which individually make up less than 0.5% of the entire dataset. These languages include: Afrikaans, Arabic, Bosnian, Bulgarian, Catalan, Chinese, Croatian, Czech, Danish, Estonian, Finnish, Galician, Greek, Gujarati, Hindi, Icelandic, Indonesian, Latin, Latvian, Lithuanian, Malay, Marathi, Norwegian, Persian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Slovenian, Tamil, Thai, Turkish, Ukrainian, Urdu, Uzbek, Vietnamese, and unidentified. Some of the referenced materials include more than one language.

Year of publication


Available / unavailable online

Available 16,173 36.29 %
Unavailable 28,391 63.71 %
Tagged or untagged

With keywords 17,457 39.17 %
Without keywords 27,107 60.83 %