bookslover
Puritan Board Doctor
The proposed mergers went:
PCA proposes "joining & receiving" (J&R) to both the OPC and the RPCES within a few months/years of forming (yes, the PCA had an immediate name change, just like the OPC).
Both smaller bodies voted to join the larger, which involved no negotiations of merging documents, etc. The churches were simply to adopt the PCA's documents and structure (the West. Stds. being basic to all).
The PCA voted to receive the RPCES, and rejected the OPC. This was blamed on the then-current Shepherd controversy at Westminster.
At a later date, the PCA revived the J&R process, and re-invited the OPC. However, at this point the OPC desired a true merger of churches, not a "falling in" with the PCA. However, the form and terms of union was not negotiable according to the PCA. So the second time, the OPC was the side that demurred.
Interestingly, while it seems true that the RPCES pulled the PCA in a decidedly "evangelical" direction, prior to the NPC/PCA formation (1973, my mistake above) the OPC and RPCES had for a number of years been in merger discussions, but they were not moving very quickly. The RPCES was itself a union of two bodies, one of which was the largest BPC synod now separate from Carl MacIntire. So, there was some impetus for a few years to repair the breach he precipitated with the OPC at its birth.
When I first joined the OPC in 1996, I was regaled with lots of stories about the "joining and receiving" efforts between the OPC and the PCA of 20 years before. To a man, all those who told me this history were greatly relieved that it didn't happen. They all felt it was a case of the 800-pound gorilla (the PCA) swallowing the OPC whole, then spitting out the bones. Dark stories were told to me about OPC churches that had been lured into the PCA with promises of big $$ for ministry, etc., only to find that, after joining the PCA, they found themselves, in time, with their OPC guys replaced by PCA guys, and being told, in effect, "You belong to us, now, boy!"
Don't know if any of those latter "dark stories" are actually true. But I can say that my general impression is OPC people believe that the OPC "dodged a bullet" by not accepting the "joining and receiving" efforts, and are very glad that it didn't happen.