All original text with 25 chapters.  
No DJ except #1.  
All have all pages.  
Books have tight binding, DIGGER endpapers and clean pages unless otherwise noted in photos or below.  
I won't point out problems below that are in photos as I try to show everything in the photos including endpapers split at hinge (does not affect binding).

1 Old Clock Dust jacket - in two pieces at spine and partially attached where bends inside cover, few pages had the corner turned down
SOLD 4 Lilac Inn - lists to Haunted Showboat
SOLD 5 Shadow Ranch DARK - no list
SOLD 5 Shadow Ranch LIGHT - no list
SOLD 5 Shadow Ranch BLUE MULTI endpapers - no list
SOLD 8 Mysterious Letter - lists to Velvet Mask
SOLD 9 Twisted Candles - binding slightly loose, no list
SOLD 11 Broken Locket - Blue Multi endpapers, no list
SOLD 13 Ivory Charm - no list
SOLD 15 Haunted Bridge - no list
SOLD 16 Tapping Heels - lists to Witch Tree Symbol
SOLD 17 Brass Bound Trunk - no list
SOLD 21 Haunted Attic - no list
SOLD 24 Old Album - no list
SOLD 28 Black Keys - lists to Witch Tree Symbol, nice copy except for tear at top of spine, page edges clean
SOLD 31 Ringmaster's Secret - lists to SELF
33 Witch Tree - lists to SELF, 5 internal illustration & frontispiece, nice copy
SOLD 34 Haunted Window - lists to SELF, very nice copy, 5 internal illustration & frontispiece

I bought most of these in the 80s at bookstores on Long Island and Rochester, NY when I decided to start collecting beyond what I had as a kid.   

While 12 & 20 (Hollow Oak & Jewel Box) are shown in first photo, I removed them because I discovered loose pages.

Non-smoking home.

I will combine shipping for multiple books:  $4.00 first book, $1.00 each additional.
I will also combine shipping with other series books I've listed--wait for invoice to get discounted shipping!