The Immortal Jukebox: Music and popular culture blogged. The most intelligent music blog you’re likely to read.
Soul Surmise: Where faith and culture meet by Steve Stockman. Watch out for “lyric of the day”.
The Rocking Magpie: Excellent for reviews of Americana albums.
No Depression: “The Journal of Roots Music.” Great site for reviews, interviews and comment.
The Blues Blogger: Lots of great blues stuff here, including comment, reviews and videos.
American Blues Scene: For all things bluesy
Modern Blues Harmonica: Essential Lessons from harmonica master Adam Gussow
And check out this book of blues artist photographs, Beate Sandor • SHOWTIME, Kings & Queens from A to Z from Beate Sandor at: https://www.beatesandor.com/
downatthecrossroads 
Dont forget about Mojohand.com – a huge list of Blues bios, the Blues birthday list and tons of great Blues artwork and concert posters
Thanks. Will add!!