The stained glass windows in the First Christian Church building of Taylor, Texas (now United Christian Church) are simply fantastic! I haven’t seen windows quite like this anywhere else.
The architect for the 1891 Gothic Revival building was E.S. Mackin (listed as “E.B. Mackin” on the historical marker).
I haven’t been able to find much about Mackin, but I did locate the February 28, 1891 edition of The Engineering Record which has a request for bids for the church. The estimated cost of the building was $10,000.
By the early twentieth century, Mackin seems to have joined up with one F.H. Dillon. The firm of Mackin & Dillon later had offices in Monterrey and Saltillo, Mexico (see the sixth page of this PDF: http://cdigital.dgb.uanl.mx/la/1020110062/1020110062_003.pdf).
There’s also a mention of their potential involvement with an electric streetcar line in Monterrey here: http://libraryarchives.metro.net/DPGTL/ERJ/Complete/1904-08-srj-vol-24-no-6-9.pdf?fbclid=IwAR2ZGCDT268ys44q6lOA0uVqaEtEBK8NTX9F2WYkUuNZea-kkFeVqzWu3jw