Thanks DWright and BofG for responding.
BofG: I rarely read manuals. Referred to parts of a few a couple of times over the years. But read before or while using? No. Way back in the Dark Ages, (1970s - I'm now pushing 80) I applied to be an IBM Tech Rep. During the interview I was handed a working part of an IBM typewriter to study and see how it worked. Then the interviewer took it back, "broke it," and handed to me with the instructions to fix it. He timed me. I "fixed it," he told me, faster than he'd ever seen. I didn't take the IBM job - I didn't want to wear a black suit, white shirt and black tie. I took a job with Xerox: They let you wear colors. I guess I'm one of those people who have a natural ability to figure things out. I have never met a machine nor software application that I couldn't figure out very quickly. In fact, I ended up writing repair manuals for Xerox - of equipment that did not yet have any manuals. On the other hand, I could never learn to program; or code as they call it now.
In the early '90s I attended a number of the yearly Annual Macintosh Summit Conferences at UCSB. A relatively new photo editor was being touted and I bought a copy of it (Photoshop). Never read the manual but got very adept at using it. Ditto PageMaker, Illustrator, Dreamweaver and InDesign, plus dozens of other apps.
If you go to https://www.shamustown.com/store.html you will find a map I created using Photoshop, Illustrator and InDesign, all without reading a single word of a book or manual. I used a public domain "base" map and removed all the hand lettered text. Added some items (QR codes), fixed some lines and replaced all the text with computer generated text, among other things.
If you are in San Marino California in January 2022, drop by The Huntington Library, Art Museum and Botanical Gardens (simply known as The Huntington). They are planning an exhibit titled "Mapping Fiction," celebrating the 100th anniversary of Ulysses by James Joyce. My map will be part of the exhibit. If you want to see it before 1/22, go to Fromin's Deli (on Wilshire at 19th Street) in Santa Monica. The map is on the wall between the rest rooms.
In short: I'll understand and be able to act on any help proffered.
DWright: I don't believe it is PDF export settings. I appreciate the link. I'll check out the tutorial nonetheless. Thank you.
The original brochure was created in InDesign years ago, back in the bad old 32 bit days. When Apple dropped 32 bit support, the file was orphaned, along with my Adobe Web Studio suite. I eventually was able to get an IDML version of the brochure opened in Quark (w/o crashing Quark), which opened the file as a normal 8½ x11 layout. Publisher, on the other hand, opened the same file as a 1x1½" (approximately) layout - looking normal on the screen, but really very tiny. When I told Publisher to change the page size to 8½ x 11, it did so, leaving a 1x1 ½" postage stamp size layout in the center of the page. Publisher simply reduced the layout by 888% when it converted the idml to its native format. Why? I don't know, and I don't care. Quark: Expensive, opened the file normally. Publisher: Reduced price, opened the file reduced 888%. I guess you get what you pay for. I've nearly completed the edits in Quark now - first time I've really ever used Quark. I had hoped to replace Quark with Publisher. Guess I won't. At least the job is almost done and the printer will be able to do his thing. At some point I might create something new in Publisher, but don't hold your breath!
Since no one else responded I guess this situation is unique. Would be nice to know why Publisher did was it did, but all I really need to know is that I can't rely on it.
Loren