A Candlestick All Of Gold
https://www.t-austin-sparks.org/A_Candlestick_All_of_Gold.htm
All Things In Christ
https://www.t-austin-sparks.org/All_Things_in_Christ.htm
A Way Of Growth
https://www.t-austin-sparks.org/A_Way_of_Growth.htm
Pioneers Of The Heavenly Way
https://www.austin-sparks.net/english/books/000988.html
Called Unto The Fellowship Of His Son
https://www.austin-sparks.net/english/books/called_unto_the_fellowship_of_his_son.html
More below
https://www.t-austin-sparks.org/T-Austin-Sparks-Books.html
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https://www.austin-sparks.net/english/books/books_alpha.html