I've played off and on at Hyde Park for more than 30 years as it was my high school's home course and my uncle was a member. My family has had a member at the club for four generations. And, my cousin recently found a silver trophy for the Vice-President's Cup that my great-grandfather won in 1923.
I joined the club almost three years ago. I am now on the grounds committee. Hopefully, I will be able to share some exciting news later this month on a new master plan for the course.
The previous work, done by Tim Liddy, was done without any Ross drawings. Shortly after the work was completed, a member found the complete set of Ross drawings in the attic of his parents' house (I think I have that correct.) Despite not having these drawings, Liddy's new first green is eerily similar to Ross' first green. I have the pdfs of the drawings. They are very detailed, have some green alterations/changes made by Ross, and a drawing of every bunker on the course with instructions on how to build them. If someone can post them or help me to, I will be glad to share them.
Regarding Bendelow, if my memory of the club history is correct, he did the original nine holes. Then, another nine was added by the pro and members. Then, Ross redesigned the course in 1921. Although, I believe he kept what is now the 12th hole, a long par 3 over two ravines with an fantastic green, because he thought it was so good.
I must shout out our super as he does a fantastic job maintaining the course and is super keen to restore as much Ross as he possibly can.