Take a look in:
It’s pretty much the only OTA I’ve seen in synth circuits (other than the even-more-obsolete LM13600 and CA3080) and yeah, pretty much the last OTA in DIP packaging. Barton’s DIY designs are 100% through hole, but they’ve switched to SMD LM13700. You can find them, or things alleged to be them, on eBay and AliExpress, but caveat emptor. Speculation that maybe Alfa would produce a DIP clone has so far proved wrong. There’s apparently one Chinese company producing and selling them, but they’re pretty much an unknown quantity. You may just have to learn to solder SOIC. I mean, it’s not THAT hard (says the guy who’s done it about four times, and has 19 DIP LM13700s left in his stash).