I am looking for the June 2012 Fertility Supplement, but it seems not available through IPUMS. I found the data at http://thedataweb.rm.census.gov/ftp/c…, but not the stata codes to open it.
IPUMS-CPS is currently working on expanding the availability of basic monthly data and non-March Supplements, such as the Fertility Supplement, both forward and backward in time. These data files will be released throughout the next year.