"personal acquaintances" is a correct and usable phrase in written English.
It refers to people that a person knows on a personal level, but not necessarily as close friends. Example: "I invited a few personal acquaintances to the party, but most of my close friends were unable to attend."
Association members solicited from personal acquaintances and businesses.
She made a second visit to Russia in 1917 and only through personal acquaintances there escaped being caught up in the turmoil of the Revolution.
In consequence, he ceased to show in public and gave up oils in favour of watercolours, which he could more easily dispose of to personal acquaintances.
The closest Irving ever came to naming Ichabod B. Crane as his inspiration was when he confided that Ichabod was a composite drawn from several personal acquaintances.
Real journalism, as Winner as has just so clearly demonstrated, has to be laced through with references to old-time Hollywood stars who used to be personal acquaintances.
The bank made a point of noting that Sir John Bond, the main bank group chairman and other top executives, were personal acquaintances of Caring.
Personal acquaintance with an infected person might represent familiarity, but we could not examine 'familiarity' directly.
Refugees and exiles henceforth figured heavily in her personal acquaintance and in her literary imagination.
But why — other than personal acquaintance — would a famous writer with many other possibilities give you her work?
And so it is with nearly everyone Schlesinger meets: the insights won by personal acquaintance accord with the conventional judgment.
He said he arranged the attack with a personal acquaintance, Ali Safuri, a local leader of the militant Islamic Jihad group.
