Incase it gets censored:
Nov 30th SOS wrote to SCOTUS: https://www.scotusblog.com/case-files/cases/republican-party-of-pennsylvania-v-boockvar-2/
SOS first gave the 10k number in a press release: https://www.media.pa.gov/pages/state-details.aspx?newsid=432
Court Orders Nov 6 Deadline: https://www.npr.org/2020/10/19/922411176/supreme-court-rules-pennsylvania-can-count-ballots-received-after-election-day
(post is archived)