I've never had much of an interest in blackletter types until I came across one from ca. 1860-80 recently. I took a liking to it and researching it led me to a discovery which I cannot find an answer to.
Namely: why did many -- if not all -- American foundries not include design-sensitive numbers in their blackletter fonts in that early era?
I saw numerous examples of blackletter in use with Arabic numbers (frequently oldstyle) but even then there was no consistency in the fonts used. Later on -- mid/late 1870s -- some foundries began to make an attempt to include somewhat design-sensitive numbers but not all were well done.
Any information or opinions are most welcome.