Shelfmarks and Shelfmark Listing
Shelfmarks
Each item in the Research Centre has a shelfmark/accession number in the format AA999-999, where AA is comprised of up to two alphabetical characters and indicates the section the item belongs to; the 999 in front of the dash represents either no or three numerical values which in turn indicate a subdivision of that section, which can be a periodical title, a series title, or a particular subject area. The 999 after the dash represents three numerical values that are the accession number indicating when the item was added to the Research Centre.
As you will see in the listings below not all shelfmarks use the full complement of available characters. Two examples of this are the birth indexes which have no alphabetical prefix and the special purchases sub division which comprises only the alphabetical prefix SP a dash and then the accession number.
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Irish Genealogy
Shelfmarks in this section have the alphabetical prefix IR. The subdivisions currently run from 010 to 980. Some of the main subdivisions are as follows: 010 to 090 are periodicals; 100 to 450 relate to church records; 475 to 500 are directories; 525 to 550 are clans and family histories; 575 to 675 are gravestone inscriptions.
To view a complete list of shelfmark headings for this section click here.
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Rest of the World Genealogy
Shelfmarks in this section have an alphabetical prefix. Most of these are a single letter indicating the country, e.g S for Scotland.
To view a complete list of shelfmark headings for this section click here.
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Directories
Shelfmarks in this section have an alphabetical prefix. This is the letter D, the numerical subdivision is then used to indicate a series e.g. Who's Who or a type of directory e.g. Occupational.
To view a complete list of shelfmark headings for this section click here.
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Periodicals
Shelfmarks in this section have an alphabetical prefix. This is the letter P, the numerical subdivision is then used to indicate a particular title. The periodicals shelfmark is a recent innovation, with the consequence that there are more periodicals in the Irish Genealogy section than the periodicals section.
To view a complete list of shelfmark headings for this section click here.
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Federation of Family History Society Publications
Shelfmarks in this section have an alphabetical prefix. This is the letter M, the numerical subdivision is then used to indicate a series e.g. My Ancestors... or a subject e.g. the Poor Laws.
To view a complete list of shelfmark headings for this section click here.
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