Provide guidance on use of <materialspec>

SAA-SDT / EAD3

https://www.loc.gov/ead/index.html

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Provide guidance on use of <materialspec> #344

Closed anarchivist closed 9 years ago

anarchivist commented 10 years ago

In EAD 2002, <materialspec> was understood in part to map to MARC fields 254, 255, and 256. In my opinion, the type of data that appears in a 256 field is probably better expressed in <extent>. I'm curious if our work on the geographic elements somehow addresses some of the needs to map geographic information that would be expressed in a 255 field.

(copied from #297)

kshepher commented 9 years ago

Looking at the MARC examples for 256 reinforces the point about field 256, and I've changed the mapping. The addition of the geographiccoordinates element accommodates 255$c, but not the other contents of 255, so I've split that up in the crosswalks for both MARC and MODS.