I could need some help figuring out how to properly enter and print working papers with biblatex-chicago?
I used to have entries like this (prior to switching to biblatex):
@workingpaper{silverstein1981limits-awareness,
Address = {Austin},
Author = {Silverstein, Michael},
Language = {en},
Number = {84},
Publisher = {Southwest Educational Development Laboratory},
Series = {Sociolinguistic Working Paper},
Title = {The Limits of Awareness},
Year = {1981}}
some also with an url field.
But biblatex doesn't include @workingpaper anymore. According to the manual one should use the @unpublished category. However if I change it to unpublished it only prints:
Silverstein, Michael. 1981. “The Limits of Awareness.” Austin.
which is not enough information if one wants to follow Chicago. CMoS recommends treating working papers like theses/dissertations or lectures/presentations. This is the example from their website which I'd like to replicate (adapted for author-date format):
Dyer, Lee, and Jeff Ericksen. 1980. "Complexity-Based Agile Enterprises: Putting Self-Organizing Emergence to Work." CAHRS Working Paper 08-01, School of Industrial and Labor Relations, Center for Advanced Human Resource Studies, Cornell University, Ithaca, NY. http://digitalcommons.ilr.cornell.edu/cahrswp/473.
Thus for my example above I'd like to end up with (for author date):
Silverstein, Michael. 1981. "The Limits of Awareness." Sociolinguistic Working Paper 84, Southwest Educational Development Laboratory, Austin.
How do I get @unpublished to print that additional information about publisher, series, and number? Or how should I modify my entry to get what I want?

biblatex-chicago. The author ofbiblatex-chicagonotes that he finds the info on@reports in the CMS a bit sparse and so went for something similar to@book; if you have reasons to doubt that is correct you could give the author a shout so he can re-evaluate things. – moewe Aug 21 '16 at 16:39@reports are very much published. You could argue it is informally published - but then what does that even mean?) – moewe Aug 21 '16 at 16:43\DeclareFieldFormat[report]{title}{\mkbibquote{#1\isdot}}should be enough. – moewe Aug 21 '16 at 16:52titleinto a dot, as it is with all the other entry types (which is actually how Chicago wants it)? – jan Aug 22 '16 at 09:46\usepackage{xpatch}\xpatchbibdriver{report}{\newcunit}{\newunit}{}{}. But that seems to be intentional, maybe you should give thetypefield. – moewe Aug 22 '16 at 09:53\newunit), try\usepackage{xpatch}\xpatchbibdriver{report}{\newcunit}{\newunit}{}{}or copy it manually. Thetypefield should hold the type of paper you are referring (whitepaper, ...). I would not mind leaving it out, but because thebiblatexmanual makes it mandatory, so doesbiblatex-chicago(I believe) and so the full stop is turned into a comma. – moewe Aug 22 '16 at 10:09biblatexstuff! – jan Aug 22 '16 at 10:20