Ive seen them on eBay. It may take a year or 2 but they are offered at times on eBay.
Connors can be found in the 1950 V356 set, I saw at least 3-4 offered on eBay in 2 last year.
Here is one that I picked up cheap and later sold
Connor is also found in the scarce Cuban issue 1949/50 Acebo y Cia
I saw at least one offered on eBay in last 3 years or so.
Maras (Maris) has 2 cards in the 1953 Fargo-Morehead Twins team Issued PC size cards, they are scarce and its been a few years since Ive seen one offered that I can remember.
Jack Reed, dont know who he is, sorry.